20525280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{701}}^1$

素因数の和:780

約数の個数: 96

約数和(自身を含む): 65808288

約数和(自身を除く): 45283008

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 80, 96, 120, 122, 160, 183, 240, 244, 305, 366, 480, 488, 610, 701, 732, 915, 976, 1220, 1402, 1464, 1830, 1952, 2103, 2440, 2804, 2928, 3505, 3660, 4206, 4880, 5608, 5856, 7010, 7320, 8412, 9760, 10515, 11216, 14020, 14640, 16824, 21030, 22432, 28040, 29280, 33648, 42060, 42761, 56080, 67296, 84120, 85522, 112160, 128283, 168240, 171044, 213805, 256566, 336480, 342088, 427610, 513132, 641415, 684176, 855220, 1026264, 1282830, 1368352, 1710440, 2052528, 2565660, 3420880, 4105056, 5131320, 6841760, 10262640, 20525280]

約数ペア:

[(1, 20525280), (2, 10262640), (3, 6841760), (4, 5131320), (5, 4105056), (6, 3420880), (8, 2565660), (10, 2052528), (12, 1710440), (15, 1368352), (16, 1282830), (20, 1026264), (24, 855220), (30, 684176), (32, 641415), (40, 513132), (48, 427610), (60, 342088), (61, 336480), (80, 256566), (96, 213805), (120, 171044), (122, 168240), (160, 128283), (183, 112160), (240, 85522), (244, 84120), (305, 67296), (366, 56080), (480, 42761), (488, 42060), (610, 33648), (701, 29280), (732, 28040), (915, 22432), (976, 21030), (1220, 16824), (1402, 14640), (1464, 14020), (1830, 11216), (1952, 10515), (2103, 9760), (2440, 8412), (2804, 7320), (2928, 7010), (3505, 5856), (3660, 5608), (4206, 4880)]