311131340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1\times {\mathrm{2351}}^1$

素因数の和:2882

約数の個数: 48

約数和(自身を含む): 705317760

約数和(自身を除く): 394186420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 509, 1018, 2036, 2351, 2545, 4702, 5090, 6617, 9404, 10180, 11755, 13234, 23510, 26468, 30563, 33085, 47020, 61126, 66170, 122252, 132340, 152815, 305630, 611260, 1196659, 2393318, 4786636, 5983295, 11966590, 15556567, 23933180, 31113134, 62226268, 77782835, 155565670, 311131340]

約数ペア:

[(1, 311131340), (2, 155565670), (4, 77782835), (5, 62226268), (10, 31113134), (13, 23933180), (20, 15556567), (26, 11966590), (52, 5983295), (65, 4786636), (130, 2393318), (260, 1196659), (509, 611260), (1018, 305630), (2036, 152815), (2351, 132340), (2545, 122252), (4702, 66170), (5090, 61126), (6617, 47020), (9404, 33085), (10180, 30563), (11755, 26468), (13234, 23510)]