20076875

素因数分解:

$5^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1$

素因数の和:393

約数の個数: 40

約数和(自身を含む): 30965088

約数和(自身を除く): 10888213

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 125, 175, 325, 353, 455, 625, 875, 1625, 1765, 2275, 2471, 4375, 4589, 8125, 8825, 11375, 12355, 22945, 32123, 44125, 56875, 61775, 114725, 160615, 220625, 308875, 573625, 803075, 1544375, 2868125, 4015375, 20076875]

約数ペア:

[(1, 20076875), (5, 4015375), (7, 2868125), (13, 1544375), (25, 803075), (35, 573625), (65, 308875), (91, 220625), (125, 160615), (175, 114725), (325, 61775), (353, 56875), (455, 44125), (625, 32123), (875, 22945), (1625, 12355), (1765, 11375), (2275, 8825), (2471, 8125), (4375, 4589)]