21856085

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^2\times {\mathrm{103}}^1$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 28094976

約数和(自身を除く): 6238891

約数列:

[1, 5, 31, 37, 103, 155, 185, 515, 1147, 1369, 3193, 3811, 5735, 6845, 15965, 19055, 42439, 118141, 141007, 212195, 590705, 705035, 4371217, 21856085]

約数ペア:

[(1, 21856085), (5, 4371217), (31, 705035), (37, 590705), (103, 212195), (155, 141007), (185, 118141), (515, 42439), (1147, 19055), (1369, 15965), (3193, 6845), (3811, 5735)]