18291020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1171}}^1$

素因数の和:1262

約数の個数: 48

約数和(自身を含む): 42529536

約数和(自身を除く): 24238516

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1171, 1420, 1562, 2342, 3124, 3905, 4684, 5855, 7810, 11710, 12881, 15620, 23420, 25762, 51524, 64405, 83141, 128810, 166282, 257620, 332564, 415705, 831410, 914551, 1662820, 1829102, 3658204, 4572755, 9145510, 18291020]

約数ペア:

[(1, 18291020), (2, 9145510), (4, 4572755), (5, 3658204), (10, 1829102), (11, 1662820), (20, 914551), (22, 831410), (44, 415705), (55, 332564), (71, 257620), (110, 166282), (142, 128810), (220, 83141), (284, 64405), (355, 51524), (710, 25762), (781, 23420), (1171, 15620), (1420, 12881), (1562, 11710), (2342, 7810), (3124, 5855), (3905, 4684)]