81906175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1669}}^1$

素因数の和:1843

約数の個数: 24

約数和(自身を含む): 110166560

約数和(自身を除く): 28260385

約数列:

[1, 5, 13, 25, 65, 151, 325, 755, 1669, 1963, 3775, 8345, 9815, 21697, 41725, 49075, 108485, 252019, 542425, 1260095, 3276247, 6300475, 16381235, 81906175]

約数ペア:

[(1, 81906175), (5, 16381235), (13, 6300475), (25, 3276247), (65, 1260095), (151, 542425), (325, 252019), (755, 108485), (1669, 49075), (1963, 41725), (3775, 21697), (8345, 9815)]