21626640

素因数分解:

$2^4\times 3^2\times 5^1\times 7^2\times {\mathrm{613}}^1$

素因数の和:646

約数の個数: 180

約数和(自身を含む): 84625164

約数和(自身を除く): 62998524

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, 49, 56, 60, 63, 70, 72, 80, 84, 90, 98, 105, 112, 120, 126, 140, 144, 147, 168, 180, 196, 210, 240, 245, 252, 280, 294, 315, 336, 360, 392, 420, 441, 490, 504, 560, 588, 613, 630, 720, 735, 784, 840, 882, 980, 1008, 1176, 1226, 1260, 1470, 1680, 1764, 1839, 1960, 2205, 2352, 2452, 2520, 2940, 3065, 3528, 3678, 3920, 4291, 4410, 4904, 5040, 5517, 5880, 6130, 7056, 7356, 8582, 8820, 9195, 9808, 11034, 11760, 12260, 12873, 14712, 17164, 17640, 18390, 21455, 22068, 24520, 25746, 27585, 29424, 30037, 34328, 35280, 36780, 38619, 42910, 44136, 49040, 51492, 55170, 60074, 64365, 68656, 73560, 77238, 85820, 88272, 90111, 102984, 110340, 120148, 128730, 147120, 150185, 154476, 171640, 180222, 193095, 205968, 220680, 240296, 257460, 270333, 300370, 308952, 343280, 360444, 386190, 441360, 450555, 480592, 514920, 540666, 600740, 617904, 720888, 772380, 901110, 1029840, 1081332, 1201480, 1351665, 1441776, 1544760, 1802220, 2162664, 2402960, 2703330, 3089520, 3604440, 4325328, 5406660, 7208880, 10813320, 21626640]

約数ペア:

[(1, 21626640), (2, 10813320), (3, 7208880), (4, 5406660), (5, 4325328), (6, 3604440), (7, 3089520), (8, 2703330), (9, 2402960), (10, 2162664), (12, 1802220), (14, 1544760), (15, 1441776), (16, 1351665), (18, 1201480), (20, 1081332), (21, 1029840), (24, 901110), (28, 772380), (30, 720888), (35, 617904), (36, 600740), (40, 540666), (42, 514920), (45, 480592), (48, 450555), (49, 441360), (56, 386190), (60, 360444), (63, 343280), (70, 308952), (72, 300370), (80, 270333), (84, 257460), (90, 240296), (98, 220680), (105, 205968), (112, 193095), (120, 180222), (126, 171640), (140, 154476), (144, 150185), (147, 147120), (168, 128730), (180, 120148), (196, 110340), (210, 102984), (240, 90111), (245, 88272), (252, 85820), (280, 77238), (294, 73560), (315, 68656), (336, 64365), (360, 60074), (392, 55170), (420, 51492), (441, 49040), (490, 44136), (504, 42910), (560, 38619), (588, 36780), (613, 35280), (630, 34328), (720, 30037), (735, 29424), (784, 27585), (840, 25746), (882, 24520), (980, 22068), (1008, 21455), (1176, 18390), (1226, 17640), (1260, 17164), (1470, 14712), (1680, 12873), (1764, 12260), (1839, 11760), (1960, 11034), (2205, 9808), (2352, 9195), (2452, 8820), (2520, 8582), (2940, 7356), (3065, 7056), (3528, 6130), (3678, 5880), (3920, 5517), (4291, 5040), (4410, 4904)]