21248470

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124991}}^1$

素因数の和:125015

約数の個数: 16

約数和(自身を含む): 40497408

約数和(自身を除く): 19248938

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124991, 249982, 624955, 1249910, 2124847, 4249694, 10624235, 21248470]

約数ペア:

[(1, 21248470), (2, 10624235), (5, 4249694), (10, 2124847), (17, 1249910), (34, 624955), (85, 249982), (170, 124991)]