21044270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161879}}^1$

素因数の和:161899

約数の個数: 16

約数和(自身を含む): 40793760

約数和(自身を除く): 19749490

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161879, 323758, 809395, 1618790, 2104427, 4208854, 10522135, 21044270]

約数ペア:

[(1, 21044270), (2, 10522135), (5, 4208854), (10, 2104427), (13, 1618790), (26, 809395), (65, 323758), (130, 161879)]