20675890

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1\times {\mathrm{239}}^1$

素因数の和:498

約数の個数: 32

約数和(自身を含む): 38465280

約数和(自身を除く): 17789390

約数列:

[1, 2, 5, 10, 41, 82, 205, 211, 239, 410, 422, 478, 1055, 1195, 2110, 2390, 8651, 9799, 17302, 19598, 43255, 48995, 50429, 86510, 97990, 100858, 252145, 504290, 2067589, 4135178, 10337945, 20675890]

約数ペア:

[(1, 20675890), (2, 10337945), (5, 4135178), (10, 2067589), (41, 504290), (82, 252145), (205, 100858), (211, 97990), (239, 86510), (410, 50429), (422, 48995), (478, 43255), (1055, 19598), (1195, 17302), (2110, 9799), (2390, 8651)]