20996858980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1\times {\mathrm{171571}}^1$

素因数の和:171820

約数の個数: 48

約数和(自身を含む): 45830312640

約数和(自身を除く): 24833453660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 211, 290, 422, 580, 844, 1055, 2110, 4220, 6119, 12238, 24476, 30595, 61190, 122380, 171571, 343142, 686284, 857855, 1715710, 3431420, 4975559, 9951118, 19902236, 24877795, 36201481, 49755590, 72402962, 99511180, 144805924, 181007405, 362014810, 724029620, 1049842949, 2099685898, 4199371796, 5249214745, 10498429490, 20996858980]

約数ペア:

[(1, 20996858980), (2, 10498429490), (4, 5249214745), (5, 4199371796), (10, 2099685898), (20, 1049842949), (29, 724029620), (58, 362014810), (116, 181007405), (145, 144805924), (211, 99511180), (290, 72402962), (422, 49755590), (580, 36201481), (844, 24877795), (1055, 19902236), (2110, 9951118), (4220, 4975559), (6119, 3431420), (12238, 1715710), (24476, 857855), (30595, 686284), (61190, 343142), (122380, 171571)]