81276715

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{4073}}^1$

素因数の和:4398

約数の個数: 16

約数和(自身を含む): 105402528

約数和(自身を除く): 24125813

約数列:

[1, 5, 13, 65, 307, 1535, 3991, 4073, 19955, 20365, 52949, 264745, 1250411, 6252055, 16255343, 81276715]

約数ペア:

[(1, 81276715), (5, 16255343), (13, 6252055), (65, 1250411), (307, 264745), (1535, 52949), (3991, 20365), (4073, 19955)]