39998890

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:586

約数の個数: 32

約数和(自身を含む): 73659600

約数和(自身を除く): 33660710

約数列:

[1, 2, 5, 10, 73, 146, 157, 314, 349, 365, 698, 730, 785, 1570, 1745, 3490, 11461, 22922, 25477, 50954, 54793, 57305, 109586, 114610, 127385, 254770, 273965, 547930, 3999889, 7999778, 19999445, 39998890]

約数ペア:

[(1, 39998890), (2, 19999445), (5, 7999778), (10, 3999889), (73, 547930), (146, 273965), (157, 254770), (314, 127385), (349, 114610), (365, 109586), (698, 57305), (730, 54793), (785, 50954), (1570, 25477), (1745, 22922), (3490, 11461)]