19390480

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1487}}^1$

素因数の和:1663

約数の個数: 40

約数和(自身を含む): 45389952

約数和(自身を除く): 25999472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1487, 1630, 2608, 2974, 3260, 5948, 6520, 7435, 11896, 13040, 14870, 23792, 29740, 59480, 118960, 242381, 484762, 969524, 1211905, 1939048, 2423810, 3878096, 4847620, 9695240, 19390480]

約数ペア:

[(1, 19390480), (2, 9695240), (4, 4847620), (5, 3878096), (8, 2423810), (10, 1939048), (16, 1211905), (20, 969524), (40, 484762), (80, 242381), (163, 118960), (326, 59480), (652, 29740), (815, 23792), (1304, 14870), (1487, 13040), (1630, 11896), (2608, 7435), (2974, 6520), (3260, 5948)]