81789860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{1699}}^1$

素因数の和:1820

約数の個数: 48

約数和(自身を含む): 179928000

約数和(自身を除く): 98138140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 83, 116, 145, 166, 290, 332, 415, 580, 830, 1660, 1699, 2407, 3398, 4814, 6796, 8495, 9628, 12035, 16990, 24070, 33980, 48140, 49271, 98542, 141017, 197084, 246355, 282034, 492710, 564068, 705085, 985420, 1410170, 2820340, 4089493, 8178986, 16357972, 20447465, 40894930, 81789860]

約数ペア:

[(1, 81789860), (2, 40894930), (4, 20447465), (5, 16357972), (10, 8178986), (20, 4089493), (29, 2820340), (58, 1410170), (83, 985420), (116, 705085), (145, 564068), (166, 492710), (290, 282034), (332, 246355), (415, 197084), (580, 141017), (830, 98542), (1660, 49271), (1699, 48140), (2407, 33980), (3398, 24070), (4814, 16990), (6796, 12035), (8495, 9628)]