21587961

素因数分解:

$3^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:333

約数の個数: 24

約数和(自身を含む): 30720256

約数和(自身を除く): 9132295

約数列:

[1, 3, 23, 61, 69, 183, 223, 529, 669, 1403, 1587, 4209, 5129, 13603, 15387, 32269, 40809, 96807, 117967, 312869, 353901, 938607, 7195987, 21587961]

約数ペア:

[(1, 21587961), (3, 7195987), (23, 938607), (61, 353901), (69, 312869), (183, 117967), (223, 96807), (529, 40809), (669, 32269), (1403, 15387), (1587, 13603), (4209, 5129)]