21001578

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{269251}}^1$

素因数の和:269269

約数の個数: 16

約数和(自身を含む): 45234336

約数和(自身を除く): 24232758

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 269251, 538502, 807753, 1615506, 3500263, 7000526, 10500789, 21001578]

約数ペア:

[(1, 21001578), (2, 10500789), (3, 7000526), (6, 3500263), (13, 1615506), (26, 807753), (39, 538502), (78, 269251)]