31410280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71387}}^1$

素因数の和:71409

約数の個数: 32

約数和(自身を含む): 77099040

約数和(自身を除く): 45688760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 71387, 142774, 285548, 356935, 571096, 713870, 785257, 1427740, 1570514, 2855480, 3141028, 3926285, 6282056, 7852570, 15705140, 31410280]

約数ペア:

[(1, 31410280), (2, 15705140), (4, 7852570), (5, 6282056), (8, 3926285), (10, 3141028), (11, 2855480), (20, 1570514), (22, 1427740), (40, 785257), (44, 713870), (55, 571096), (88, 356935), (110, 285548), (220, 142774), (440, 71387)]