261840971

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 323066880

約数和(自身を除く): 61225909

約数列:

[1, 7, 29, 37, 71, 203, 259, 491, 497, 1073, 2059, 2627, 3437, 7511, 14239, 14413, 18167, 18389, 34861, 76183, 99673, 127169, 244027, 526843, 533281, 1010969, 1289857, 3687901, 7076783, 9028999, 37405853, 261840971]

約数ペア:

[(1, 261840971), (7, 37405853), (29, 9028999), (37, 7076783), (71, 3687901), (203, 1289857), (259, 1010969), (491, 533281), (497, 526843), (1073, 244027), (2059, 127169), (2627, 99673), (3437, 76183), (7511, 34861), (14239, 18389), (14413, 18167)]