1287260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4951}}^1$

素因数の和:4973

約数の個数: 24

約数和(自身を含む): 2911776

約数和(自身を除く): 1624516

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 4951, 9902, 19804, 24755, 49510, 64363, 99020, 128726, 257452, 321815, 643630, 1287260]

約数ペア:

[(1, 1287260), (2, 643630), (4, 321815), (5, 257452), (10, 128726), (13, 99020), (20, 64363), (26, 49510), (52, 24755), (65, 19804), (130, 9902), (260, 4951)]