389900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{557}}^1$

素因数の和:578

約数の個数: 36

約数和(自身を含む): 968688

約数和(自身を除く): 578788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 557, 700, 1114, 2228, 2785, 3899, 5570, 7798, 11140, 13925, 15596, 19495, 27850, 38990, 55700, 77980, 97475, 194950, 389900]

約数ペア:

[(1, 389900), (2, 194950), (4, 97475), (5, 77980), (7, 55700), (10, 38990), (14, 27850), (20, 19495), (25, 15596), (28, 13925), (35, 11140), (50, 7798), (70, 5570), (100, 3899), (140, 2785), (175, 2228), (350, 1114), (557, 700)]