21405190

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2381}}^1$

素因数の和:2448

約数の個数: 32

約数和(自身を含む): 41160960

約数和(自身を除く): 19755770

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 145, 155, 290, 310, 899, 1798, 2381, 4495, 4762, 8990, 11905, 23810, 69049, 73811, 138098, 147622, 345245, 369055, 690490, 738110, 2140519, 4281038, 10702595, 21405190]

約数ペア:

[(1, 21405190), (2, 10702595), (5, 4281038), (10, 2140519), (29, 738110), (31, 690490), (58, 369055), (62, 345245), (145, 147622), (155, 138098), (290, 73811), (310, 69049), (899, 23810), (1798, 11905), (2381, 8990), (4495, 4762)]