20090280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23917}}^1$

素因数の和:23938

約数の個数: 64

約数和(自身を含む): 68883840

約数和(自身を除く): 48793560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 23917, 47834, 71751, 95668, 119585, 143502, 167419, 191336, 239170, 287004, 334838, 358755, 478340, 502257, 574008, 669676, 717510, 837095, 956680, 1004514, 1339352, 1435020, 1674190, 2009028, 2511285, 2870040, 3348380, 4018056, 5022570, 6696760, 10045140, 20090280]

約数ペア:

[(1, 20090280), (2, 10045140), (3, 6696760), (4, 5022570), (5, 4018056), (6, 3348380), (7, 2870040), (8, 2511285), (10, 2009028), (12, 1674190), (14, 1435020), (15, 1339352), (20, 1004514), (21, 956680), (24, 837095), (28, 717510), (30, 669676), (35, 574008), (40, 502257), (42, 478340), (56, 358755), (60, 334838), (70, 287004), (84, 239170), (105, 191336), (120, 167419), (140, 143502), (168, 119585), (210, 95668), (280, 71751), (420, 47834), (840, 23917)]