20016620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{461}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 45638208

約数和(自身を除く): 25621588

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 167, 260, 334, 461, 668, 835, 922, 1670, 1844, 2171, 2305, 3340, 4342, 4610, 5993, 8684, 9220, 10855, 11986, 21710, 23972, 29965, 43420, 59930, 76987, 119860, 153974, 307948, 384935, 769870, 1000831, 1539740, 2001662, 4003324, 5004155, 10008310, 20016620]

約数ペア:

[(1, 20016620), (2, 10008310), (4, 5004155), (5, 4003324), (10, 2001662), (13, 1539740), (20, 1000831), (26, 769870), (52, 384935), (65, 307948), (130, 153974), (167, 119860), (260, 76987), (334, 59930), (461, 43420), (668, 29965), (835, 23972), (922, 21710), (1670, 11986), (1844, 10855), (2171, 9220), (2305, 8684), (3340, 5993), (4342, 4610)]