18538205

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{457}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 27260160

約数和(自身を除く): 8721955

約数列:

[1, 5, 7, 19, 35, 61, 95, 133, 305, 427, 457, 665, 1159, 2135, 2285, 3199, 5795, 8113, 8683, 15995, 27877, 40565, 43415, 60781, 139385, 195139, 303905, 529663, 975695, 2648315, 3707641, 18538205]

約数ペア:

[(1, 18538205), (5, 3707641), (7, 2648315), (19, 975695), (35, 529663), (61, 303905), (95, 195139), (133, 139385), (305, 60781), (427, 43415), (457, 40565), (665, 27877), (1159, 15995), (2135, 8683), (2285, 8113), (3199, 5795)]