18234620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 40068000

約数和(自身を除く): 21833380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 149, 211, 290, 298, 422, 580, 596, 745, 844, 1055, 1490, 2110, 2980, 4220, 4321, 6119, 8642, 12238, 17284, 21605, 24476, 30595, 31439, 43210, 61190, 62878, 86420, 122380, 125756, 157195, 314390, 628780, 911731, 1823462, 3646924, 4558655, 9117310, 18234620]

約数ペア:

[(1, 18234620), (2, 9117310), (4, 4558655), (5, 3646924), (10, 1823462), (20, 911731), (29, 628780), (58, 314390), (116, 157195), (145, 125756), (149, 122380), (211, 86420), (290, 62878), (298, 61190), (422, 43210), (580, 31439), (596, 30595), (745, 24476), (844, 21605), (1055, 17284), (1490, 12238), (2110, 8642), (2980, 6119), (4220, 4321)]