15661665

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 28554240

約数和(自身を除く): 12892575

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 103, 109, 155, 279, 309, 327, 465, 515, 545, 927, 981, 1395, 1545, 1635, 3193, 3379, 4635, 4905, 9579, 10137, 11227, 15965, 16895, 28737, 30411, 33681, 47895, 50685, 56135, 101043, 143685, 152055, 168405, 348037, 505215, 1044111, 1740185, 3132333, 5220555, 15661665]

約数ペア:

[(1, 15661665), (3, 5220555), (5, 3132333), (9, 1740185), (15, 1044111), (31, 505215), (45, 348037), (93, 168405), (103, 152055), (109, 143685), (155, 101043), (279, 56135), (309, 50685), (327, 47895), (465, 33681), (515, 30411), (545, 28737), (927, 16895), (981, 15965), (1395, 11227), (1545, 10137), (1635, 9579), (3193, 4905), (3379, 4635)]