20999384

素因数分解:

$2^3\times 7^1\times {\mathrm{374989}}^1$

素因数の和:375002

約数の個数: 16

約数和(自身を含む): 44998800

約数和(自身を除く): 23999416

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 374989, 749978, 1499956, 2624923, 2999912, 5249846, 10499692, 20999384]

約数ペア:

[(1, 20999384), (2, 10499692), (4, 5249846), (7, 2999912), (8, 2624923), (14, 1499956), (28, 749978), (56, 374989)]