21254930

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{125029}}^1$

素因数の和:125053

約数の個数: 16

約数和(自身を含む): 40509720

約数和(自身を除く): 19254790

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 125029, 250058, 625145, 1250290, 2125493, 4250986, 10627465, 21254930]

約数ペア:

[(1, 21254930), (2, 10627465), (5, 4250986), (10, 2125493), (17, 1250290), (34, 625145), (85, 250058), (170, 125029)]