81168440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{38287}}^1$

素因数の和:38351

約数の個数: 32

約数和(自身を含む): 186079680

約数和(自身を除く): 104911240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 38287, 76574, 153148, 191435, 306296, 382870, 765740, 1531480, 2029211, 4058422, 8116844, 10146055, 16233688, 20292110, 40584220, 81168440]

約数ペア:

[(1, 81168440), (2, 40584220), (4, 20292110), (5, 16233688), (8, 10146055), (10, 8116844), (20, 4058422), (40, 2029211), (53, 1531480), (106, 765740), (212, 382870), (265, 306296), (424, 191435), (530, 153148), (1060, 76574), (2120, 38287)]