1988786020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7649177}}^1$

素因数の和:7649199

約数の個数: 24

約数和(自身を含む): 4497716664

約数和(自身を除く): 2508930644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 7649177, 15298354, 30596708, 38245885, 76491770, 99439301, 152983540, 198878602, 397757204, 497196505, 994393010, 1988786020]

約数ペア:

[(1, 1988786020), (2, 994393010), (4, 497196505), (5, 397757204), (10, 198878602), (13, 152983540), (20, 99439301), (26, 76491770), (52, 38245885), (65, 30596708), (130, 15298354), (260, 7649177)]