20110520

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3617}}^1$

素因数の和:3767

約数の個数: 32

約数和(自身を含む): 45586800

約数和(自身を除く): 25476280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3617, 5560, 7234, 14468, 18085, 28936, 36170, 72340, 144680, 502763, 1005526, 2011052, 2513815, 4022104, 5027630, 10055260, 20110520]

約数ペア:

[(1, 20110520), (2, 10055260), (4, 5027630), (5, 4022104), (8, 2513815), (10, 2011052), (20, 1005526), (40, 502763), (139, 144680), (278, 72340), (556, 36170), (695, 28936), (1112, 18085), (1390, 14468), (2780, 7234), (3617, 5560)]