1296388840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{790481}}^1$

素因数の和:790533

約数の個数: 32

約数和(自身を含む): 2988021960

約数和(自身を除く): 1691633120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 790481, 1580962, 3161924, 3952405, 6323848, 7904810, 15809620, 31619240, 32409721, 64819442, 129638884, 162048605, 259277768, 324097210, 648194420, 1296388840]

約数ペア:

[(1, 1296388840), (2, 648194420), (4, 324097210), (5, 259277768), (8, 162048605), (10, 129638884), (20, 64819442), (40, 32409721), (41, 31619240), (82, 15809620), (164, 7904810), (205, 6323848), (328, 3952405), (410, 3161924), (820, 1580962), (1640, 790481)]