863980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3323}}^1$

素因数の和:3345

約数の個数: 24

約数和(自身を含む): 1954512

約数和(自身を除く): 1090532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 3323, 6646, 13292, 16615, 33230, 43199, 66460, 86398, 172796, 215995, 431990, 863980]

約数ペア:

[(1, 863980), (2, 431990), (4, 215995), (5, 172796), (10, 86398), (13, 66460), (20, 43199), (26, 33230), (52, 16615), (65, 13292), (130, 6646), (260, 3323)]