21581404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{2399}}^1$

素因数の和:2589

約数の個数: 24

約数和(自身を含む): 40924800

約数和(自身を除く): 19343396

約数列:

[1, 2, 4, 13, 26, 52, 173, 346, 692, 2249, 2399, 4498, 4798, 8996, 9596, 31187, 62374, 124748, 415027, 830054, 1660108, 5395351, 10790702, 21581404]

約数ペア:

[(1, 21581404), (2, 10790702), (4, 5395351), (13, 1660108), (26, 830054), (52, 415027), (173, 124748), (346, 62374), (692, 31187), (2249, 9596), (2399, 8996), (4498, 4798)]