20866430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12347}}^1$

素因数の和:12380

約数の個数: 24

約数和(自身を含む): 40674312

約数和(自身を除く): 19807882

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12347, 24694, 61735, 123470, 160511, 321022, 802555, 1605110, 2086643, 4173286, 10433215, 20866430]

約数ペア:

[(1, 20866430), (2, 10433215), (5, 4173286), (10, 2086643), (13, 1605110), (26, 802555), (65, 321022), (130, 160511), (169, 123470), (338, 61735), (845, 24694), (1690, 12347)]