21709690

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{74861}}^1$

素因数の和:74897

約数の個数: 16

約数和(自身を含む): 40425480

約数和(自身を除く): 18715790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 74861, 149722, 374305, 748610, 2170969, 4341938, 10854845, 21709690]

約数ペア:

[(1, 21709690), (2, 10854845), (5, 4341938), (10, 2170969), (29, 748610), (58, 374305), (145, 149722), (290, 74861)]