19565360

素因数分解:

$2^4\times 5^1\times {\mathrm{244567}}^1$

素因数の和:244580

約数の個数: 20

約数和(自身を含む): 45489648

約数和(自身を除く): 25924288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 244567, 489134, 978268, 1222835, 1956536, 2445670, 3913072, 4891340, 9782680, 19565360]

約数ペア:

[(1, 19565360), (2, 9782680), (4, 4891340), (5, 3913072), (8, 2445670), (10, 1956536), (16, 1222835), (20, 978268), (40, 489134), (80, 244567)]