20501260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2719}}^1$

素因数の和:2770

約数の個数: 48

約数和(自身を含む): 47980800

約数和(自身を除く): 27479540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2719, 3770, 5438, 7540, 10876, 13595, 27190, 35347, 54380, 70694, 78851, 141388, 157702, 176735, 315404, 353470, 394255, 706940, 788510, 1025063, 1577020, 2050126, 4100252, 5125315, 10250630, 20501260]

約数ペア:

[(1, 20501260), (2, 10250630), (4, 5125315), (5, 4100252), (10, 2050126), (13, 1577020), (20, 1025063), (26, 788510), (29, 706940), (52, 394255), (58, 353470), (65, 315404), (116, 176735), (130, 157702), (145, 141388), (260, 78851), (290, 70694), (377, 54380), (580, 35347), (754, 27190), (1508, 13595), (1885, 10876), (2719, 7540), (3770, 5438)]