81864720

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:502

約数の個数: 240

約数和(自身を含む): 323431680

約数和(自身を除く): 241566960

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, 37, 40, 42, 45, 48, 56, 60, 63, 70, 72, 74, 80, 84, 90, 105, 111, 112, 120, 126, 140, 144, 148, 168, 180, 185, 210, 222, 240, 252, 259, 280, 296, 315, 333, 336, 360, 370, 420, 439, 444, 504, 518, 555, 560, 592, 630, 666, 720, 740, 777, 840, 878, 888, 1008, 1036, 1110, 1260, 1295, 1317, 1332, 1480, 1554, 1665, 1680, 1756, 1776, 2072, 2195, 2220, 2331, 2520, 2590, 2634, 2664, 2960, 3073, 3108, 3330, 3512, 3885, 3951, 4144, 4390, 4440, 4662, 5040, 5180, 5268, 5328, 6146, 6216, 6585, 6660, 7024, 7770, 7902, 8780, 8880, 9219, 9324, 10360, 10536, 11655, 12292, 12432, 13170, 13320, 15365, 15540, 15804, 16243, 17560, 18438, 18648, 19755, 20720, 21072, 23310, 24584, 26340, 26640, 27657, 30730, 31080, 31608, 32486, 35120, 36876, 37296, 39510, 46095, 46620, 48729, 49168, 52680, 55314, 61460, 62160, 63216, 64972, 73752, 79020, 81215, 92190, 93240, 97458, 105360, 110628, 113701, 122920, 129944, 138285, 146187, 147504, 158040, 162430, 184380, 186480, 194916, 221256, 227402, 243645, 245840, 259888, 276570, 292374, 316080, 324860, 341103, 368760, 389832, 442512, 454804, 487290, 553140, 568505, 584748, 649720, 682206, 730935, 737520, 779664, 909608, 974580, 1023309, 1106280, 1137010, 1169496, 1299440, 1364412, 1461870, 1705515, 1819216, 1949160, 2046618, 2212560, 2274020, 2338992, 2728824, 2923740, 3411030, 3898320, 4093236, 4548040, 5116545, 5457648, 5847480, 6822060, 8186472, 9096080, 10233090, 11694960, 13644120, 16372944, 20466180, 27288240, 40932360, 81864720]

約数ペア:

[(1, 81864720), (2, 40932360), (3, 27288240), (4, 20466180), (5, 16372944), (6, 13644120), (7, 11694960), (8, 10233090), (9, 9096080), (10, 8186472), (12, 6822060), (14, 5847480), (15, 5457648), (16, 5116545), (18, 4548040), (20, 4093236), (21, 3898320), (24, 3411030), (28, 2923740), (30, 2728824), (35, 2338992), (36, 2274020), (37, 2212560), (40, 2046618), (42, 1949160), (45, 1819216), (48, 1705515), (56, 1461870), (60, 1364412), (63, 1299440), (70, 1169496), (72, 1137010), (74, 1106280), (80, 1023309), (84, 974580), (90, 909608), (105, 779664), (111, 737520), (112, 730935), (120, 682206), (126, 649720), (140, 584748), (144, 568505), (148, 553140), (168, 487290), (180, 454804), (185, 442512), (210, 389832), (222, 368760), (240, 341103), (252, 324860), (259, 316080), (280, 292374), (296, 276570), (315, 259888), (333, 245840), (336, 243645), (360, 227402), (370, 221256), (420, 194916), (439, 186480), (444, 184380), (504, 162430), (518, 158040), (555, 147504), (560, 146187), (592, 138285), (630, 129944), (666, 122920), (720, 113701), (740, 110628), (777, 105360), (840, 97458), (878, 93240), (888, 92190), (1008, 81215), (1036, 79020), (1110, 73752), (1260, 64972), (1295, 63216), (1317, 62160), (1332, 61460), (1480, 55314), (1554, 52680), (1665, 49168), (1680, 48729), (1756, 46620), (1776, 46095), (2072, 39510), (2195, 37296), (2220, 36876), (2331, 35120), (2520, 32486), (2590, 31608), (2634, 31080), (2664, 30730), (2960, 27657), (3073, 26640), (3108, 26340), (3330, 24584), (3512, 23310), (3885, 21072), (3951, 20720), (4144, 19755), (4390, 18648), (4440, 18438), (4662, 17560), (5040, 16243), (5180, 15804), (5268, 15540), (5328, 15365), (6146, 13320), (6216, 13170), (6585, 12432), (6660, 12292), (7024, 11655), (7770, 10536), (7902, 10360), (8780, 9324), (8880, 9219)]