28685072

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{137909}}^1$

素因数の和:137930

約数の個数: 20

約数和(自身を含む): 59852940

約数和(自身を除く): 31167868

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 137909, 275818, 551636, 1103272, 1792817, 2206544, 3585634, 7171268, 14342536, 28685072]

約数ペア:

[(1, 28685072), (2, 14342536), (4, 7171268), (8, 3585634), (13, 2206544), (16, 1792817), (26, 1103272), (52, 551636), (104, 275818), (208, 137909)]