21274544

素因数分解:

$2^4\times {\mathrm{409}}^1\times {\mathrm{3251}}^1$

素因数の和:3668

約数の個数: 20

約数和(自身を含む): 41332920

約数和(自身を除く): 20058376

約数列:

[1, 2, 4, 8, 16, 409, 818, 1636, 3251, 3272, 6502, 6544, 13004, 26008, 52016, 1329659, 2659318, 5318636, 10637272, 21274544]

約数ペア:

[(1, 21274544), (2, 10637272), (4, 5318636), (8, 2659318), (16, 1329659), (409, 52016), (818, 26008), (1636, 13004), (3251, 6544), (3272, 6502)]