16400560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{18637}}^1$

素因数の和:18661

約数の個数: 40

約数和(自身を含む): 41600016

約数和(自身を除く): 25199456

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 18637, 37274, 74548, 93185, 149096, 186370, 205007, 298192, 372740, 410014, 745480, 820028, 1025035, 1490960, 1640056, 2050070, 3280112, 4100140, 8200280, 16400560]

約数ペア:

[(1, 16400560), (2, 8200280), (4, 4100140), (5, 3280112), (8, 2050070), (10, 1640056), (11, 1490960), (16, 1025035), (20, 820028), (22, 745480), (40, 410014), (44, 372740), (55, 298192), (80, 205007), (88, 186370), (110, 149096), (176, 93185), (220, 74548), (440, 37274), (880, 18637)]