20100015

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{881}}^1$

素因数の和:921

約数の個数: 48

約数和(自身を含む): 38737440

約数和(自身を除く): 18637425

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 169, 195, 351, 507, 585, 845, 881, 1521, 1755, 2535, 2643, 4405, 4563, 7605, 7929, 11453, 13215, 22815, 23787, 34359, 39645, 57265, 103077, 118935, 148889, 171795, 309231, 446667, 515385, 744445, 1340001, 1546155, 2233335, 4020003, 6700005, 20100015]

約数ペア:

[(1, 20100015), (3, 6700005), (5, 4020003), (9, 2233335), (13, 1546155), (15, 1340001), (27, 744445), (39, 515385), (45, 446667), (65, 309231), (117, 171795), (135, 148889), (169, 118935), (195, 103077), (351, 57265), (507, 39645), (585, 34359), (845, 23787), (881, 22815), (1521, 13215), (1755, 11453), (2535, 7929), (2643, 7605), (4405, 4563)]