20121101875

素因数分解:

$5^4\times 7^1\times {\mathrm{59}}^1\times {\mathrm{77951}}^1$

素因数の和:78037

約数の個数: 40

約数和(自身を含む): 29222645760

約数和(自身を除く): 9101543885

約数列:

[1, 5, 7, 25, 35, 59, 125, 175, 295, 413, 625, 875, 1475, 2065, 4375, 7375, 10325, 36875, 51625, 77951, 258125, 389755, 545657, 1948775, 2728285, 4599109, 9743875, 13641425, 22995545, 32193763, 48719375, 68207125, 114977725, 160968815, 341035625, 574888625, 804844075, 2874443125, 4024220375, 20121101875]

約数ペア:

[(1, 20121101875), (5, 4024220375), (7, 2874443125), (25, 804844075), (35, 574888625), (59, 341035625), (125, 160968815), (175, 114977725), (295, 68207125), (413, 48719375), (625, 32193763), (875, 22995545), (1475, 13641425), (2065, 9743875), (4375, 4599109), (7375, 2728285), (10325, 1948775), (36875, 545657), (51625, 389755), (77951, 258125)]