1388891875

素因数分解:

$5^4\times 7^1\times {\mathrm{523}}^1\times {\mathrm{607}}^1$

素因数の和:1157

約数の個数: 40

約数和(自身を含む): 1990562816

約数和(自身を除く): 601670941

約数列:

[1, 5, 7, 25, 35, 125, 175, 523, 607, 625, 875, 2615, 3035, 3661, 4249, 4375, 13075, 15175, 18305, 21245, 65375, 75875, 91525, 106225, 317461, 326875, 379375, 457625, 531125, 1587305, 2222227, 2288125, 2655625, 7936525, 11111135, 39682625, 55555675, 198413125, 277778375, 1388891875]

約数ペア:

[(1, 1388891875), (5, 277778375), (7, 198413125), (25, 55555675), (35, 39682625), (125, 11111135), (175, 7936525), (523, 2655625), (607, 2288125), (625, 2222227), (875, 1587305), (2615, 531125), (3035, 457625), (3661, 379375), (4249, 326875), (4375, 317461), (13075, 106225), (15175, 91525), (18305, 75875), (21245, 65375)]