21805419

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{4729}}^1$

素因数の和:4814

約数の個数: 16

約数和(自身を含む): 30650400

約数和(自身を除く): 8844981

約数列:

[1, 3, 29, 53, 87, 159, 1537, 4611, 4729, 14187, 137141, 250637, 411423, 751911, 7268473, 21805419]

約数ペア:

[(1, 21805419), (3, 7268473), (29, 751911), (53, 411423), (87, 250637), (159, 137141), (1537, 14187), (4611, 4729)]