21365510

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^3$

素因数の和:161

約数の個数: 32

約数和(自身を含む): 40690944

約数和(自身を除く): 19325434

約数列:

[1, 2, 5, 10, 31, 41, 62, 82, 155, 205, 310, 410, 1271, 1681, 2542, 3362, 6355, 8405, 12710, 16810, 52111, 68921, 104222, 137842, 260555, 344605, 521110, 689210, 2136551, 4273102, 10682755, 21365510]

約数ペア:

[(1, 21365510), (2, 10682755), (5, 4273102), (10, 2136551), (31, 689210), (41, 521110), (62, 344605), (82, 260555), (155, 137842), (205, 104222), (310, 68921), (410, 52111), (1271, 16810), (1681, 12710), (2542, 8405), (3362, 6355)]