20855625

素因数分解:

$3^1\times 5^4\times 7^2\times {\mathrm{227}}^1$

素因数の和:264

約数の個数: 60

約数和(自身を含む): 40599504

約数和(自身を除く): 19743879

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 125, 147, 175, 227, 245, 375, 525, 625, 681, 735, 875, 1135, 1225, 1589, 1875, 2625, 3405, 3675, 4375, 4767, 5675, 6125, 7945, 11123, 13125, 17025, 18375, 23835, 28375, 30625, 33369, 39725, 55615, 85125, 91875, 119175, 141875, 166845, 198625, 278075, 425625, 595875, 834225, 993125, 1390375, 2979375, 4171125, 6951875, 20855625]

約数ペア:

[(1, 20855625), (3, 6951875), (5, 4171125), (7, 2979375), (15, 1390375), (21, 993125), (25, 834225), (35, 595875), (49, 425625), (75, 278075), (105, 198625), (125, 166845), (147, 141875), (175, 119175), (227, 91875), (245, 85125), (375, 55615), (525, 39725), (625, 33369), (681, 30625), (735, 28375), (875, 23835), (1135, 18375), (1225, 17025), (1589, 13125), (1875, 11123), (2625, 7945), (3405, 6125), (3675, 5675), (4375, 4767)]