20277100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^2\times {\mathrm{211}}^1$

素因数の和:287

約数の個数: 54

約数和(自身を含む): 45681972

約数和(自身を除く): 25404872

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 211, 310, 422, 620, 775, 844, 961, 1055, 1550, 1922, 2110, 3100, 3844, 4220, 4805, 5275, 6541, 9610, 10550, 13082, 19220, 21100, 24025, 26164, 32705, 48050, 65410, 96100, 130820, 163525, 202771, 327050, 405542, 654100, 811084, 1013855, 2027710, 4055420, 5069275, 10138550, 20277100]

約数ペア:

[(1, 20277100), (2, 10138550), (4, 5069275), (5, 4055420), (10, 2027710), (20, 1013855), (25, 811084), (31, 654100), (50, 405542), (62, 327050), (100, 202771), (124, 163525), (155, 130820), (211, 96100), (310, 65410), (422, 48050), (620, 32705), (775, 26164), (844, 24025), (961, 21100), (1055, 19220), (1550, 13082), (1922, 10550), (2110, 9610), (3100, 6541), (3844, 5275), (4220, 4805)]