21292778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{7951}}^1$

素因数の和:8069

約数の個数: 16

約数和(自身を含む): 34734336

約数和(自身を除く): 13441558

約数列:

[1, 2, 13, 26, 103, 206, 1339, 2678, 7951, 15902, 103363, 206726, 818953, 1637906, 10646389, 21292778]

約数ペア:

[(1, 21292778), (2, 10646389), (13, 1637906), (26, 818953), (103, 206726), (206, 103363), (1339, 15902), (2678, 7951)]