21980998

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{19661}}^1$

素因数の和:19719

約数の個数: 16

約数和(自身を含む): 36335376

約数和(自身を除く): 14354378

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 19661, 39322, 255593, 511186, 845423, 1690846, 10990499, 21980998]

約数ペア:

[(1, 21980998), (2, 10990499), (13, 1690846), (26, 845423), (43, 511186), (86, 255593), (559, 39322), (1118, 19661)]