1280779920

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1277}}^1$

素因数の和:1502

約数の個数: 240

約数和(自身を含む): 4944326400

約数和(自身を除く): 3663546480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 199, 210, 240, 252, 280, 315, 336, 360, 398, 420, 504, 560, 597, 630, 720, 796, 840, 995, 1008, 1194, 1260, 1277, 1393, 1592, 1680, 1791, 1990, 2388, 2520, 2554, 2786, 2985, 3184, 3582, 3831, 3980, 4179, 4776, 5040, 5108, 5572, 5970, 6385, 6965, 7164, 7662, 7960, 8358, 8939, 8955, 9552, 10216, 11144, 11493, 11940, 12537, 12770, 13930, 14328, 15324, 15920, 16716, 17878, 17910, 19155, 20432, 20895, 22288, 22986, 23880, 25074, 25540, 26817, 27860, 28656, 30648, 33432, 35756, 35820, 38310, 41790, 44695, 45972, 47760, 50148, 51080, 53634, 55720, 57465, 61296, 62685, 66864, 71512, 71640, 76620, 80451, 83580, 89390, 91944, 100296, 102160, 107268, 111440, 114930, 125370, 134085, 143024, 143280, 153240, 160902, 167160, 178780, 183888, 200592, 214536, 229860, 250740, 254123, 268170, 306480, 321804, 334320, 357560, 402255, 429072, 459720, 501480, 508246, 536340, 643608, 715120, 762369, 804510, 919440, 1002960, 1016492, 1072680, 1270615, 1287216, 1524738, 1609020, 1778861, 2032984, 2145360, 2287107, 2541230, 3049476, 3218040, 3557722, 3811845, 4065968, 4574214, 5082460, 5336583, 6098952, 6436080, 7115444, 7623690, 8894305, 9148428, 10164920, 10673166, 11435535, 12197904, 14230888, 15247380, 16009749, 17788610, 18296856, 20329840, 21346332, 22871070, 26682915, 28461776, 30494760, 32019498, 35577220, 36593712, 42692664, 45742140, 53365830, 60989520, 64038996, 71154440, 80048745, 85385328, 91484280, 106731660, 128077992, 142308880, 160097490, 182968560, 213463320, 256155984, 320194980, 426926640, 640389960, 1280779920]

約数ペア:

[(1, 1280779920), (2, 640389960), (3, 426926640), (4, 320194980), (5, 256155984), (6, 213463320), (7, 182968560), (8, 160097490), (9, 142308880), (10, 128077992), (12, 106731660), (14, 91484280), (15, 85385328), (16, 80048745), (18, 71154440), (20, 64038996), (21, 60989520), (24, 53365830), (28, 45742140), (30, 42692664), (35, 36593712), (36, 35577220), (40, 32019498), (42, 30494760), (45, 28461776), (48, 26682915), (56, 22871070), (60, 21346332), (63, 20329840), (70, 18296856), (72, 17788610), (80, 16009749), (84, 15247380), (90, 14230888), (105, 12197904), (112, 11435535), (120, 10673166), (126, 10164920), (140, 9148428), (144, 8894305), (168, 7623690), (180, 7115444), (199, 6436080), (210, 6098952), (240, 5336583), (252, 5082460), (280, 4574214), (315, 4065968), (336, 3811845), (360, 3557722), (398, 3218040), (420, 3049476), (504, 2541230), (560, 2287107), (597, 2145360), (630, 2032984), (720, 1778861), (796, 1609020), (840, 1524738), (995, 1287216), (1008, 1270615), (1194, 1072680), (1260, 1016492), (1277, 1002960), (1393, 919440), (1592, 804510), (1680, 762369), (1791, 715120), (1990, 643608), (2388, 536340), (2520, 508246), (2554, 501480), (2786, 459720), (2985, 429072), (3184, 402255), (3582, 357560), (3831, 334320), (3980, 321804), (4179, 306480), (4776, 268170), (5040, 254123), (5108, 250740), (5572, 229860), (5970, 214536), (6385, 200592), (6965, 183888), (7164, 178780), (7662, 167160), (7960, 160902), (8358, 153240), (8939, 143280), (8955, 143024), (9552, 134085), (10216, 125370), (11144, 114930), (11493, 111440), (11940, 107268), (12537, 102160), (12770, 100296), (13930, 91944), (14328, 89390), (15324, 83580), (15920, 80451), (16716, 76620), (17878, 71640), (17910, 71512), (19155, 66864), (20432, 62685), (20895, 61296), (22288, 57465), (22986, 55720), (23880, 53634), (25074, 51080), (25540, 50148), (26817, 47760), (27860, 45972), (28656, 44695), (30648, 41790), (33432, 38310), (35756, 35820)]