31231460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{120121}}^1$

素因数の和:120143

約数の個数: 24

約数和(自身を含む): 70631736

約数和(自身を除く): 39400276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 120121, 240242, 480484, 600605, 1201210, 1561573, 2402420, 3123146, 6246292, 7807865, 15615730, 31231460]

約数ペア:

[(1, 31231460), (2, 15615730), (4, 7807865), (5, 6246292), (10, 3123146), (13, 2402420), (20, 1561573), (26, 1201210), (52, 600605), (65, 480484), (130, 240242), (260, 120121)]