18481840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1367}}^1$

素因数の和:1406

約数の個数: 60

約数和(自身を含む): 46563984

約数和(自身を除く): 28082144

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1367, 1690, 2704, 2734, 3380, 5468, 6760, 6835, 10936, 13520, 13670, 17771, 21872, 27340, 35542, 54680, 71084, 88855, 109360, 142168, 177710, 231023, 284336, 355420, 462046, 710840, 924092, 1155115, 1421680, 1848184, 2310230, 3696368, 4620460, 9240920, 18481840]

約数ペア:

[(1, 18481840), (2, 9240920), (4, 4620460), (5, 3696368), (8, 2310230), (10, 1848184), (13, 1421680), (16, 1155115), (20, 924092), (26, 710840), (40, 462046), (52, 355420), (65, 284336), (80, 231023), (104, 177710), (130, 142168), (169, 109360), (208, 88855), (260, 71084), (338, 54680), (520, 35542), (676, 27340), (845, 21872), (1040, 17771), (1352, 13670), (1367, 13520), (1690, 10936), (2704, 6835), (2734, 6760), (3380, 5468)]