78172964

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{421}}^1\times {\mathrm{761}}^1$

素因数の和:1247

約数の個数: 24

約数和(自身を含む): 139558776

約数和(自身を除く): 61385812

約数列:

[1, 2, 4, 61, 122, 244, 421, 761, 842, 1522, 1684, 3044, 25681, 46421, 51362, 92842, 102724, 185684, 320381, 640762, 1281524, 19543241, 39086482, 78172964]

約数ペア:

[(1, 78172964), (2, 39086482), (4, 19543241), (61, 1281524), (122, 640762), (244, 320381), (421, 185684), (761, 102724), (842, 92842), (1522, 51362), (1684, 46421), (3044, 25681)]