81882740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{1637}}^1$

素因数の和:1748

約数の個数: 48

約数和(自身を含む): 179144784

約数和(自身を除く): 97262044

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 205, 244, 305, 410, 610, 820, 1220, 1637, 2501, 3274, 5002, 6548, 8185, 10004, 12505, 16370, 25010, 32740, 50020, 67117, 99857, 134234, 199714, 268468, 335585, 399428, 499285, 671170, 998570, 1342340, 1997140, 4094137, 8188274, 16376548, 20470685, 40941370, 81882740]

約数ペア:

[(1, 81882740), (2, 40941370), (4, 20470685), (5, 16376548), (10, 8188274), (20, 4094137), (41, 1997140), (61, 1342340), (82, 998570), (122, 671170), (164, 499285), (205, 399428), (244, 335585), (305, 268468), (410, 199714), (610, 134234), (820, 99857), (1220, 67117), (1637, 50020), (2501, 32740), (3274, 25010), (5002, 16370), (6548, 12505), (8185, 10004)]