81319664

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{69623}}^1$

素因数の和:69704

約数の個数: 20

約数和(自身を含む): 159717456

約数和(自身を除く): 78397792

約数列:

[1, 2, 4, 8, 16, 73, 146, 292, 584, 1168, 69623, 139246, 278492, 556984, 1113968, 5082479, 10164958, 20329916, 40659832, 81319664]

約数ペア:

[(1, 81319664), (2, 40659832), (4, 20329916), (8, 10164958), (16, 5082479), (73, 1113968), (146, 556984), (292, 278492), (584, 139246), (1168, 69623)]