20517320

素因数分解:

$2^3\times 5^1\times {\mathrm{683}}^1\times {\mathrm{751}}^1$

素因数の和:1445

約数の個数: 32

約数和(自身を含む): 46293120

約数和(自身を除く): 25775800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 683, 751, 1366, 1502, 2732, 3004, 3415, 3755, 5464, 6008, 6830, 7510, 13660, 15020, 27320, 30040, 512933, 1025866, 2051732, 2564665, 4103464, 5129330, 10258660, 20517320]

約数ペア:

[(1, 20517320), (2, 10258660), (4, 5129330), (5, 4103464), (8, 2564665), (10, 2051732), (20, 1025866), (40, 512933), (683, 30040), (751, 27320), (1366, 15020), (1502, 13660), (2732, 7510), (3004, 6830), (3415, 6008), (3755, 5464)]