18982808

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{523}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 38514000

約数和(自身を除く): 19531192

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 349, 523, 698, 1046, 1396, 2092, 2792, 4184, 4537, 6799, 9074, 13598, 18148, 27196, 36296, 54392, 182527, 365054, 730108, 1460216, 2372851, 4745702, 9491404, 18982808]

約数ペア:

[(1, 18982808), (2, 9491404), (4, 4745702), (8, 2372851), (13, 1460216), (26, 730108), (52, 365054), (104, 182527), (349, 54392), (523, 36296), (698, 27196), (1046, 18148), (1396, 13598), (2092, 9074), (2792, 6799), (4184, 4537)]