21660970

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{661}}^1$

素因数の和:810

約数の個数: 32

約数和(自身を含む): 40752720

約数和(自身を除く): 19091750

約数列:

[1, 2, 5, 10, 29, 58, 113, 145, 226, 290, 565, 661, 1130, 1322, 3277, 3305, 6554, 6610, 16385, 19169, 32770, 38338, 74693, 95845, 149386, 191690, 373465, 746930, 2166097, 4332194, 10830485, 21660970]

約数ペア:

[(1, 21660970), (2, 10830485), (5, 4332194), (10, 2166097), (29, 746930), (58, 373465), (113, 191690), (145, 149386), (226, 95845), (290, 74693), (565, 38338), (661, 32770), (1130, 19169), (1322, 16385), (3277, 6610), (3305, 6554)]