261686655

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{1721}}^1$

素因数の和:1872

約数の個数: 48

約数和(自身を含む): 472792320

約数和(自身を除く): 211105665

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 109, 155, 279, 327, 465, 545, 981, 1395, 1635, 1721, 3379, 4905, 5163, 8605, 10137, 15489, 16895, 25815, 30411, 50685, 53351, 77445, 152055, 160053, 187589, 266755, 480159, 562767, 800265, 937945, 1688301, 2400795, 2813835, 5815259, 8441505, 17445777, 29076295, 52337331, 87228885, 261686655]

約数ペア:

[(1, 261686655), (3, 87228885), (5, 52337331), (9, 29076295), (15, 17445777), (31, 8441505), (45, 5815259), (93, 2813835), (109, 2400795), (155, 1688301), (279, 937945), (327, 800265), (465, 562767), (545, 480159), (981, 266755), (1395, 187589), (1635, 160053), (1721, 152055), (3379, 77445), (4905, 53351), (5163, 50685), (8605, 30411), (10137, 25815), (15489, 16895)]