21385741

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{257}}^1$

素因数の和:480

約数の個数: 16

約数和(自身を含む): 23882544

約数和(自身を除く): 2496803

約数列:

[1, 13, 37, 173, 257, 481, 2249, 3341, 6401, 9509, 44461, 83213, 123617, 577993, 1645057, 21385741]

約数ペア:

[(1, 21385741), (13, 1645057), (37, 577993), (173, 123617), (257, 83213), (481, 44461), (2249, 9509), (3341, 6401)]