72421180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{278543}}^1$

素因数の和:278565

約数の個数: 24

約数和(自身を含む): 163783872

約数和(自身を除く): 91362692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 278543, 557086, 1114172, 1392715, 2785430, 3621059, 5570860, 7242118, 14484236, 18105295, 36210590, 72421180]

約数ペア:

[(1, 72421180), (2, 36210590), (4, 18105295), (5, 14484236), (10, 7242118), (13, 5570860), (20, 3621059), (26, 2785430), (52, 1392715), (65, 1114172), (130, 557086), (260, 278543)]