28454920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54721}}^1$

素因数の和:54745

約数の個数: 32

約数和(自身を含む): 68949720

約数和(自身を除く): 40494800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54721, 109442, 218884, 273605, 437768, 547210, 711373, 1094420, 1422746, 2188840, 2845492, 3556865, 5690984, 7113730, 14227460, 28454920]

約数ペア:

[(1, 28454920), (2, 14227460), (4, 7113730), (5, 5690984), (8, 3556865), (10, 2845492), (13, 2188840), (20, 1422746), (26, 1094420), (40, 711373), (52, 547210), (65, 437768), (104, 273605), (130, 218884), (260, 109442), (520, 54721)]