28802020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{110777}}^1$

素因数の和:110799

約数の個数: 24

約数和(自身を含む): 65137464

約数和(自身を除く): 36335444

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 110777, 221554, 443108, 553885, 1107770, 1440101, 2215540, 2880202, 5760404, 7200505, 14401010, 28802020]

約数ペア:

[(1, 28802020), (2, 14401010), (4, 7200505), (5, 5760404), (10, 2880202), (13, 2215540), (20, 1440101), (26, 1107770), (52, 553885), (65, 443108), (130, 221554), (260, 110777)]