21252875

素因数分解:

$5^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{227}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 30730752

約数和(自身を除く): 9477877

約数列:

[1, 5, 7, 25, 35, 107, 125, 175, 227, 535, 749, 875, 1135, 1589, 2675, 3745, 5675, 7945, 13375, 18725, 24289, 28375, 39725, 93625, 121445, 170023, 198625, 607225, 850115, 3036125, 4250575, 21252875]

約数ペア:

[(1, 21252875), (5, 4250575), (7, 3036125), (25, 850115), (35, 607225), (107, 198625), (125, 170023), (175, 121445), (227, 93625), (535, 39725), (749, 28375), (875, 24289), (1135, 18725), (1589, 13375), (2675, 7945), (3745, 5675)]