18289480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 45334080

約数和(自身を除く): 27044600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 197, 211, 220, 394, 422, 440, 788, 844, 985, 1055, 1576, 1688, 1970, 2110, 2167, 2321, 3940, 4220, 4334, 4642, 7880, 8440, 8668, 9284, 10835, 11605, 17336, 18568, 21670, 23210, 41567, 43340, 46420, 83134, 86680, 92840, 166268, 207835, 332536, 415670, 457237, 831340, 914474, 1662680, 1828948, 2286185, 3657896, 4572370, 9144740, 18289480]

約数ペア:

[(1, 18289480), (2, 9144740), (4, 4572370), (5, 3657896), (8, 2286185), (10, 1828948), (11, 1662680), (20, 914474), (22, 831340), (40, 457237), (44, 415670), (55, 332536), (88, 207835), (110, 166268), (197, 92840), (211, 86680), (220, 83134), (394, 46420), (422, 43340), (440, 41567), (788, 23210), (844, 21670), (985, 18568), (1055, 17336), (1576, 11605), (1688, 10835), (1970, 9284), (2110, 8668), (2167, 8440), (2321, 7880), (3940, 4642), (4220, 4334)]