21547360

素因数分解:

$2^5\times 5^1\times {\mathrm{137}}^1\times {\mathrm{983}}^1$

素因数の和:1135

約数の個数: 48

約数和(自身を含む): 51329376

約数和(自身を除く): 29782016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 983, 1096, 1370, 1966, 2192, 2740, 3932, 4384, 4915, 5480, 7864, 9830, 10960, 15728, 19660, 21920, 31456, 39320, 78640, 134671, 157280, 269342, 538684, 673355, 1077368, 1346710, 2154736, 2693420, 4309472, 5386840, 10773680, 21547360]

約数ペア:

[(1, 21547360), (2, 10773680), (4, 5386840), (5, 4309472), (8, 2693420), (10, 2154736), (16, 1346710), (20, 1077368), (32, 673355), (40, 538684), (80, 269342), (137, 157280), (160, 134671), (274, 78640), (548, 39320), (685, 31456), (983, 21920), (1096, 19660), (1370, 15728), (1966, 10960), (2192, 9830), (2740, 7864), (3932, 5480), (4384, 4915)]