78898520

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{12101}}^1$

素因数の和:12275

約数の個数: 32

約数和(自身を含む): 178625520

約数和(自身を除く): 99727000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 12101, 24202, 48404, 60505, 96808, 121010, 242020, 484040, 1972463, 3944926, 7889852, 9862315, 15779704, 19724630, 39449260, 78898520]

約数ペア:

[(1, 78898520), (2, 39449260), (4, 19724630), (5, 15779704), (8, 9862315), (10, 7889852), (20, 3944926), (40, 1972463), (163, 484040), (326, 242020), (652, 121010), (815, 96808), (1304, 60505), (1630, 48404), (3260, 24202), (6520, 12101)]