20998712

素因数分解:

$2^3\times 7^1\times {\mathrm{374977}}^1$

素因数の和:374990

約数の個数: 16

約数和(自身を含む): 44997360

約数和(自身を除く): 23998648

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 374977, 749954, 1499908, 2624839, 2999816, 5249678, 10499356, 20998712]

約数ペア:

[(1, 20998712), (2, 10499356), (4, 5249678), (7, 2999816), (8, 2624839), (14, 1499908), (28, 749954), (56, 374977)]