64217480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39157}}^1$

素因数の和:39209

約数の個数: 32

約数和(自身を含む): 148017240

約数和(自身を除く): 83799760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 39157, 78314, 156628, 195785, 313256, 391570, 783140, 1566280, 1605437, 3210874, 6421748, 8027185, 12843496, 16054370, 32108740, 64217480]

約数ペア:

[(1, 64217480), (2, 32108740), (4, 16054370), (5, 12843496), (8, 8027185), (10, 6421748), (20, 3210874), (40, 1605437), (41, 1566280), (82, 783140), (164, 391570), (205, 313256), (328, 195785), (410, 156628), (820, 78314), (1640, 39157)]