81958180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{787}}^1$

素因数の和:964

約数の個数: 48

約数和(自身を含む): 177924096

約数和(自身を除く): 95965916

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 127, 164, 205, 254, 410, 508, 635, 787, 820, 1270, 1574, 2540, 3148, 3935, 5207, 7870, 10414, 15740, 20828, 26035, 32267, 52070, 64534, 99949, 104140, 129068, 161335, 199898, 322670, 399796, 499745, 645340, 999490, 1998980, 4097909, 8195818, 16391636, 20489545, 40979090, 81958180]

約数ペア:

[(1, 81958180), (2, 40979090), (4, 20489545), (5, 16391636), (10, 8195818), (20, 4097909), (41, 1998980), (82, 999490), (127, 645340), (164, 499745), (205, 399796), (254, 322670), (410, 199898), (508, 161335), (635, 129068), (787, 104140), (820, 99949), (1270, 64534), (1574, 52070), (2540, 32267), (3148, 26035), (3935, 20828), (5207, 15740), (7870, 10414)]