20511758

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:412

約数の個数: 32

約数和(自身を含む): 34292160

約数和(自身を除く): 13780402

約数列:

[1, 2, 17, 29, 34, 58, 71, 142, 293, 493, 586, 986, 1207, 2059, 2414, 4118, 4981, 8497, 9962, 16994, 20803, 35003, 41606, 70006, 144449, 288898, 353651, 603287, 707302, 1206574, 10255879, 20511758]

約数ペア:

[(1, 20511758), (2, 10255879), (17, 1206574), (29, 707302), (34, 603287), (58, 353651), (71, 288898), (142, 144449), (293, 70006), (493, 41606), (586, 35003), (986, 20803), (1207, 16994), (2059, 9962), (2414, 8497), (4118, 4981)]