21239698

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{439}}^1\times {\mathrm{1423}}^1$

素因数の和:1881

約数の個数: 16

約数和(自身を含む): 33834240

約数和(自身を除く): 12594542

約数列:

[1, 2, 17, 34, 439, 878, 1423, 2846, 7463, 14926, 24191, 48382, 624697, 1249394, 10619849, 21239698]

約数ペア:

[(1, 21239698), (2, 10619849), (17, 1249394), (34, 624697), (439, 48382), (878, 24191), (1423, 14926), (2846, 7463)]