18127720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:586

約数の個数: 64

約数和(自身を含む): 44634240

約数和(自身を除く): 26506520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 71, 104, 130, 142, 260, 284, 355, 491, 520, 568, 710, 923, 982, 1420, 1846, 1964, 2455, 2840, 3692, 3928, 4615, 4910, 6383, 7384, 9230, 9820, 12766, 18460, 19640, 25532, 31915, 34861, 36920, 51064, 63830, 69722, 127660, 139444, 174305, 255320, 278888, 348610, 453193, 697220, 906386, 1394440, 1812772, 2265965, 3625544, 4531930, 9063860, 18127720]

約数ペア:

[(1, 18127720), (2, 9063860), (4, 4531930), (5, 3625544), (8, 2265965), (10, 1812772), (13, 1394440), (20, 906386), (26, 697220), (40, 453193), (52, 348610), (65, 278888), (71, 255320), (104, 174305), (130, 139444), (142, 127660), (260, 69722), (284, 63830), (355, 51064), (491, 36920), (520, 34861), (568, 31915), (710, 25532), (923, 19640), (982, 18460), (1420, 12766), (1846, 9820), (1964, 9230), (2455, 7384), (2840, 6383), (3692, 4910), (3928, 4615)]