21490414

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1553}}^1$

素因数の和:1620

約数の個数: 32

約数和(自身を含む): 38265696

約数和(自身を除く): 16775282

約数列:

[1, 2, 11, 17, 22, 34, 37, 74, 187, 374, 407, 629, 814, 1258, 1553, 3106, 6919, 13838, 17083, 26401, 34166, 52802, 57461, 114922, 290411, 580822, 632071, 976837, 1264142, 1953674, 10745207, 21490414]

約数ペア:

[(1, 21490414), (2, 10745207), (11, 1953674), (17, 1264142), (22, 976837), (34, 632071), (37, 580822), (74, 290411), (187, 114922), (374, 57461), (407, 52802), (629, 34166), (814, 26401), (1258, 17083), (1553, 13838), (3106, 6919)]