203420440

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{20261}}^1$

素因数の和:20523

約数の個数: 32

約数和(自身を含む): 459542160

約数和(自身を除く): 256121720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 20261, 40522, 81044, 101305, 162088, 202610, 405220, 810440, 5085511, 10171022, 20342044, 25427555, 40684088, 50855110, 101710220, 203420440]

約数ペア:

[(1, 203420440), (2, 101710220), (4, 50855110), (5, 40684088), (8, 25427555), (10, 20342044), (20, 10171022), (40, 5085511), (251, 810440), (502, 405220), (1004, 202610), (1255, 162088), (2008, 101305), (2510, 81044), (5020, 40522), (10040, 20261)]