17601620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 38394048

約数和(自身を除く): 20792428

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 97, 172, 194, 211, 215, 388, 422, 430, 485, 844, 860, 970, 1055, 1940, 2110, 4171, 4220, 8342, 9073, 16684, 18146, 20467, 20855, 36292, 40934, 41710, 45365, 81868, 83420, 90730, 102335, 181460, 204670, 409340, 880081, 1760162, 3520324, 4400405, 8800810, 17601620]

約数ペア:

[(1, 17601620), (2, 8800810), (4, 4400405), (5, 3520324), (10, 1760162), (20, 880081), (43, 409340), (86, 204670), (97, 181460), (172, 102335), (194, 90730), (211, 83420), (215, 81868), (388, 45365), (422, 41710), (430, 40934), (485, 36292), (844, 20855), (860, 20467), (970, 18146), (1055, 16684), (1940, 9073), (2110, 8342), (4171, 4220)]