209005540

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{1429}}^1$

素因数の和:1612

約数の個数: 48

約数和(自身を含む): 449729280

約数和(自身を除く): 240723740

約数列:

[1, 2, 4, 5, 10, 20, 71, 103, 142, 206, 284, 355, 412, 515, 710, 1030, 1420, 1429, 2060, 2858, 5716, 7145, 7313, 14290, 14626, 28580, 29252, 36565, 73130, 101459, 146260, 147187, 202918, 294374, 405836, 507295, 588748, 735935, 1014590, 1471870, 2029180, 2943740, 10450277, 20900554, 41801108, 52251385, 104502770, 209005540]

約数ペア:

[(1, 209005540), (2, 104502770), (4, 52251385), (5, 41801108), (10, 20900554), (20, 10450277), (71, 2943740), (103, 2029180), (142, 1471870), (206, 1014590), (284, 735935), (355, 588748), (412, 507295), (515, 405836), (710, 294374), (1030, 202918), (1420, 147187), (1429, 146260), (2060, 101459), (2858, 73130), (5716, 36565), (7145, 29252), (7313, 28580), (14290, 14626)]