20121775

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{293}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 26029584

約数和(自身を除く): 5907809

約数列:

[1, 5, 25, 41, 67, 205, 293, 335, 1025, 1465, 1675, 2747, 7325, 12013, 13735, 19631, 60065, 68675, 98155, 300325, 490775, 804871, 4024355, 20121775]

約数ペア:

[(1, 20121775), (5, 4024355), (25, 804871), (41, 490775), (67, 300325), (205, 98155), (293, 68675), (335, 60065), (1025, 19631), (1465, 13735), (1675, 12013), (2747, 7325)]