21400874

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:542

約数の個数: 32

約数和(自身を含む): 36640512

約数和(自身を除く): 15239638

約数列:

[1, 2, 11, 22, 37, 61, 74, 122, 407, 431, 671, 814, 862, 1342, 2257, 4514, 4741, 9482, 15947, 24827, 26291, 31894, 49654, 52582, 175417, 289201, 350834, 578402, 972767, 1945534, 10700437, 21400874]

約数ペア:

[(1, 21400874), (2, 10700437), (11, 1945534), (22, 972767), (37, 578402), (61, 350834), (74, 289201), (122, 175417), (407, 52582), (431, 49654), (671, 31894), (814, 26291), (862, 24827), (1342, 15947), (2257, 9482), (4514, 4741)]