21738475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{577}}^1$

素因数の和:735

約数の個数: 24

約数和(自身を含む): 29672208

約数和(自身を除く): 7933733

約数列:

[1, 5, 11, 25, 55, 137, 275, 577, 685, 1507, 2885, 3425, 6347, 7535, 14425, 31735, 37675, 79049, 158675, 395245, 869539, 1976225, 4347695, 21738475]

約数ペア:

[(1, 21738475), (5, 4347695), (11, 1976225), (25, 869539), (55, 395245), (137, 158675), (275, 79049), (577, 37675), (685, 31735), (1507, 14425), (2885, 7535), (3425, 6347)]