21904578

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{443}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 49454496

約数和(自身を除く): 27549918

約数列:

[1, 2, 3, 6, 9, 18, 41, 67, 82, 123, 134, 201, 246, 369, 402, 443, 603, 738, 886, 1206, 1329, 2658, 2747, 3987, 5494, 7974, 8241, 16482, 18163, 24723, 29681, 36326, 49446, 54489, 59362, 89043, 108978, 163467, 178086, 267129, 326934, 534258, 1216921, 2433842, 3650763, 7301526, 10952289, 21904578]

約数ペア:

[(1, 21904578), (2, 10952289), (3, 7301526), (6, 3650763), (9, 2433842), (18, 1216921), (41, 534258), (67, 326934), (82, 267129), (123, 178086), (134, 163467), (201, 108978), (246, 89043), (369, 59362), (402, 54489), (443, 49446), (603, 36326), (738, 29681), (886, 24723), (1206, 18163), (1329, 16482), (2658, 8241), (2747, 7974), (3987, 5494)]