31867120

素因数分解:

$2^4\times 5^1\times {\mathrm{398339}}^1$

素因数の和:398352

約数の個数: 20

約数和(自身を含む): 74091240

約数和(自身を除く): 42224120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 398339, 796678, 1593356, 1991695, 3186712, 3983390, 6373424, 7966780, 15933560, 31867120]

約数ペア:

[(1, 31867120), (2, 15933560), (4, 7966780), (5, 6373424), (8, 3983390), (10, 3186712), (16, 1991695), (20, 1593356), (40, 796678), (80, 398339)]