400894

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{907}}^1$

素因数の和:939

約数の個数: 16

約数和(自身を含む): 686448

約数和(自身を除く): 285554

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 907, 1814, 11791, 15419, 23582, 30838, 200447, 400894]

約数ペア:

[(1, 400894), (2, 200447), (13, 30838), (17, 23582), (26, 15419), (34, 11791), (221, 1814), (442, 907)]