20928728

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{877}}^1$

素因数の和:1059

約数の個数: 32

約数和(自身を含む): 41617200

約数和(自身を除く): 20688472

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 157, 314, 628, 877, 1256, 1754, 2983, 3508, 5966, 7016, 11932, 16663, 23864, 33326, 66652, 133304, 137689, 275378, 550756, 1101512, 2616091, 5232182, 10464364, 20928728]

約数ペア:

[(1, 20928728), (2, 10464364), (4, 5232182), (8, 2616091), (19, 1101512), (38, 550756), (76, 275378), (152, 137689), (157, 133304), (314, 66652), (628, 33326), (877, 23864), (1256, 16663), (1754, 11932), (2983, 7016), (3508, 5966)]