21026940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31859}}^1$

素因数の和:31882

約数の個数: 48

約数和(自身を含む): 64229760

約数和(自身を除く): 43202820

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 31859, 63718, 95577, 127436, 159295, 191154, 318590, 350449, 382308, 477885, 637180, 700898, 955770, 1051347, 1401796, 1752245, 1911540, 2102694, 3504490, 4205388, 5256735, 7008980, 10513470, 21026940]

約数ペア:

[(1, 21026940), (2, 10513470), (3, 7008980), (4, 5256735), (5, 4205388), (6, 3504490), (10, 2102694), (11, 1911540), (12, 1752245), (15, 1401796), (20, 1051347), (22, 955770), (30, 700898), (33, 637180), (44, 477885), (55, 382308), (60, 350449), (66, 318590), (110, 191154), (132, 159295), (165, 127436), (220, 95577), (330, 63718), (660, 31859)]