21124220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{719}}^1$

素因数の和:854

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 27138820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 113, 130, 226, 260, 452, 565, 719, 1130, 1438, 1469, 2260, 2876, 2938, 3595, 5876, 7190, 7345, 9347, 14380, 14690, 18694, 29380, 37388, 46735, 81247, 93470, 162494, 186940, 324988, 406235, 812470, 1056211, 1624940, 2112422, 4224844, 5281055, 10562110, 21124220]

約数ペア:

[(1, 21124220), (2, 10562110), (4, 5281055), (5, 4224844), (10, 2112422), (13, 1624940), (20, 1056211), (26, 812470), (52, 406235), (65, 324988), (113, 186940), (130, 162494), (226, 93470), (260, 81247), (452, 46735), (565, 37388), (719, 29380), (1130, 18694), (1438, 14690), (1469, 14380), (2260, 9347), (2876, 7345), (2938, 7190), (3595, 5876)]