21812955

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{757}}^1$

素因数の和:895

約数の個数: 32

約数和(自身を含む): 37329984

約数和(自身を除く): 15517029

約数列:

[1, 3, 5, 15, 17, 51, 85, 113, 255, 339, 565, 757, 1695, 1921, 2271, 3785, 5763, 9605, 11355, 12869, 28815, 38607, 64345, 85541, 193035, 256623, 427705, 1283115, 1454197, 4362591, 7270985, 21812955]

約数ペア:

[(1, 21812955), (3, 7270985), (5, 4362591), (15, 1454197), (17, 1283115), (51, 427705), (85, 256623), (113, 193035), (255, 85541), (339, 64345), (565, 38607), (757, 28815), (1695, 12869), (1921, 11355), (2271, 9605), (3785, 5763)]