21058634840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12840631}}^1$

素因数の和:12840683

約数の個数: 32

約数和(自身を含む): 48537588960

約数和(自身を除く): 27478954120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12840631, 25681262, 51362524, 64203155, 102725048, 128406310, 256812620, 513625240, 526465871, 1052931742, 2105863484, 2632329355, 4211726968, 5264658710, 10529317420, 21058634840]

約数ペア:

[(1, 21058634840), (2, 10529317420), (4, 5264658710), (5, 4211726968), (8, 2632329355), (10, 2105863484), (20, 1052931742), (40, 526465871), (41, 513625240), (82, 256812620), (164, 128406310), (205, 102725048), (328, 64203155), (410, 51362524), (820, 25681262), (1640, 12840631)]