21689977

素因数分解:

${\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:360

約数の個数: 16

約数和(自身を含む): 23647680

約数和(自身を除く): 1957703

約数列:

[1, 17, 67, 137, 139, 1139, 2329, 2363, 9179, 9313, 19043, 156043, 158321, 323731, 1275881, 21689977]

約数ペア:

[(1, 21689977), (17, 1275881), (67, 323731), (137, 158321), (139, 156043), (1139, 19043), (2329, 9313), (2363, 9179)]