21031020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3769}}^1$

素因数の和:3815

約数の個数: 72

約数和(自身を含む): 65869440

約数和(自身を除く): 44838420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3769, 5580, 7538, 11307, 15076, 18845, 22614, 33921, 37690, 45228, 56535, 67842, 75380, 113070, 116839, 135684, 169605, 226140, 233678, 339210, 350517, 467356, 584195, 678420, 701034, 1051551, 1168390, 1402068, 1752585, 2103102, 2336780, 3505170, 4206204, 5257755, 7010340, 10515510, 21031020]

約数ペア:

[(1, 21031020), (2, 10515510), (3, 7010340), (4, 5257755), (5, 4206204), (6, 3505170), (9, 2336780), (10, 2103102), (12, 1752585), (15, 1402068), (18, 1168390), (20, 1051551), (30, 701034), (31, 678420), (36, 584195), (45, 467356), (60, 350517), (62, 339210), (90, 233678), (93, 226140), (124, 169605), (155, 135684), (180, 116839), (186, 113070), (279, 75380), (310, 67842), (372, 56535), (465, 45228), (558, 37690), (620, 33921), (930, 22614), (1116, 18845), (1395, 15076), (1860, 11307), (2790, 7538), (3769, 5580)]