20806760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40013}}^1$

素因数の和:40037

約数の個数: 32

約数和(自身を含む): 50417640

約数和(自身を除く): 29610880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40013, 80026, 160052, 200065, 320104, 400130, 520169, 800260, 1040338, 1600520, 2080676, 2600845, 4161352, 5201690, 10403380, 20806760]

約数ペア:

[(1, 20806760), (2, 10403380), (4, 5201690), (5, 4161352), (8, 2600845), (10, 2080676), (13, 1600520), (20, 1040338), (26, 800260), (40, 520169), (52, 400130), (65, 320104), (104, 200065), (130, 160052), (260, 80026), (520, 40013)]