20155864

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{401}}^1$

素因数の和:571

約数の個数: 32

約数和(自身を含む): 38881440

約数和(自身を除く): 18725576

約数列:

[1, 2, 4, 8, 61, 103, 122, 206, 244, 401, 412, 488, 802, 824, 1604, 3208, 6283, 12566, 24461, 25132, 41303, 48922, 50264, 82606, 97844, 165212, 195688, 330424, 2519483, 5038966, 10077932, 20155864]

約数ペア:

[(1, 20155864), (2, 10077932), (4, 5038966), (8, 2519483), (61, 330424), (103, 195688), (122, 165212), (206, 97844), (244, 82606), (401, 50264), (412, 48922), (488, 41303), (802, 25132), (824, 24461), (1604, 12566), (3208, 6283)]