18915642

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 42831360

約数和(自身を除く): 23915718

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 109, 186, 218, 279, 311, 327, 558, 622, 654, 933, 981, 1866, 1962, 2799, 3379, 5598, 6758, 9641, 10137, 19282, 20274, 28923, 30411, 33899, 57846, 60822, 67798, 86769, 101697, 173538, 203394, 305091, 610182, 1050869, 2101738, 3152607, 6305214, 9457821, 18915642]

約数ペア:

[(1, 18915642), (2, 9457821), (3, 6305214), (6, 3152607), (9, 2101738), (18, 1050869), (31, 610182), (62, 305091), (93, 203394), (109, 173538), (186, 101697), (218, 86769), (279, 67798), (311, 60822), (327, 57846), (558, 33899), (622, 30411), (654, 28923), (933, 20274), (981, 19282), (1866, 10137), (1962, 9641), (2799, 6758), (3379, 5598)]