21070790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1487}}^1$

素因数の和:1616

約数の個数: 32

約数和(自身を含む): 41247360

約数和(自身を除く): 20176570

約数列:

[1, 2, 5, 10, 13, 26, 65, 109, 130, 218, 545, 1090, 1417, 1487, 2834, 2974, 7085, 7435, 14170, 14870, 19331, 38662, 96655, 162083, 193310, 324166, 810415, 1620830, 2107079, 4214158, 10535395, 21070790]

約数ペア:

[(1, 21070790), (2, 10535395), (5, 4214158), (10, 2107079), (13, 1620830), (26, 810415), (65, 324166), (109, 193310), (130, 162083), (218, 96655), (545, 38662), (1090, 19331), (1417, 14870), (1487, 14170), (2834, 7435), (2974, 7085)]