31821520

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1279}}^1$

素因数の和:1603

約数の個数: 40

約数和(自身を含む): 74280960

約数和(自身を除く): 42459440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 1244, 1279, 1555, 2488, 2558, 3110, 4976, 5116, 6220, 6395, 10232, 12440, 12790, 20464, 24880, 25580, 51160, 102320, 397769, 795538, 1591076, 1988845, 3182152, 3977690, 6364304, 7955380, 15910760, 31821520]

約数ペア:

[(1, 31821520), (2, 15910760), (4, 7955380), (5, 6364304), (8, 3977690), (10, 3182152), (16, 1988845), (20, 1591076), (40, 795538), (80, 397769), (311, 102320), (622, 51160), (1244, 25580), (1279, 24880), (1555, 20464), (2488, 12790), (2558, 12440), (3110, 10232), (4976, 6395), (5116, 6220)]