20722832

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1487}}^1$

素因数の和:1575

約数の個数: 40

約数和(自身を含む): 43913856

約数和(自身を除く): 23191024

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 67, 104, 134, 208, 268, 536, 871, 1072, 1487, 1742, 2974, 3484, 5948, 6968, 11896, 13936, 19331, 23792, 38662, 77324, 99629, 154648, 199258, 309296, 398516, 797032, 1295177, 1594064, 2590354, 5180708, 10361416, 20722832]

約数ペア:

[(1, 20722832), (2, 10361416), (4, 5180708), (8, 2590354), (13, 1594064), (16, 1295177), (26, 797032), (52, 398516), (67, 309296), (104, 199258), (134, 154648), (208, 99629), (268, 77324), (536, 38662), (871, 23792), (1072, 19331), (1487, 13936), (1742, 11896), (2974, 6968), (3484, 5948)]