19416560

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1489}}^1$

素因数の和:1665

約数の個数: 40

約数和(自身を含む): 45450960

約数和(自身を除く): 26034400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1489, 1630, 2608, 2978, 3260, 5956, 6520, 7445, 11912, 13040, 14890, 23824, 29780, 59560, 119120, 242707, 485414, 970828, 1213535, 1941656, 2427070, 3883312, 4854140, 9708280, 19416560]

約数ペア:

[(1, 19416560), (2, 9708280), (4, 4854140), (5, 3883312), (8, 2427070), (10, 1941656), (16, 1213535), (20, 970828), (40, 485414), (80, 242707), (163, 119120), (326, 59560), (652, 29780), (815, 23824), (1304, 14890), (1489, 13040), (1630, 11912), (2608, 7445), (2978, 6520), (3260, 5956)]