20123701875

素因数分解:

$3^2\times 5^4\times {\mathrm{1621}}^1\times {\mathrm{2207}}^1$

素因数の和:3854

約数の個数: 60

約数和(自身を含む): 36361710528

約数和(自身を除く): 16238008653

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 625, 1125, 1621, 1875, 2207, 4863, 5625, 6621, 8105, 11035, 14589, 19863, 24315, 33105, 40525, 55175, 72945, 99315, 121575, 165525, 202625, 275875, 364725, 496575, 607875, 827625, 1013125, 1379375, 1823625, 2482875, 3039375, 3577547, 4138125, 9118125, 10732641, 12414375, 17887735, 32197923, 53663205, 89438675, 160989615, 268316025, 447193375, 804948075, 1341580125, 2235966875, 4024740375, 6707900625, 20123701875]

約数ペア:

[(1, 20123701875), (3, 6707900625), (5, 4024740375), (9, 2235966875), (15, 1341580125), (25, 804948075), (45, 447193375), (75, 268316025), (125, 160989615), (225, 89438675), (375, 53663205), (625, 32197923), (1125, 17887735), (1621, 12414375), (1875, 10732641), (2207, 9118125), (4863, 4138125), (5625, 3577547), (6621, 3039375), (8105, 2482875), (11035, 1823625), (14589, 1379375), (19863, 1013125), (24315, 827625), (33105, 607875), (40525, 496575), (55175, 364725), (72945, 275875), (99315, 202625), (121575, 165525)]