78164620

素因数分解:

$2^2\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{2411}}^1$

素因数の和:4041

約数の個数: 24

約数和(自身を含む): 164315088

約数和(自身を除く): 86150468

約数列:

[1, 2, 4, 5, 10, 20, 1621, 2411, 3242, 4822, 6484, 8105, 9644, 12055, 16210, 24110, 32420, 48220, 3908231, 7816462, 15632924, 19541155, 39082310, 78164620]

約数ペア:

[(1, 78164620), (2, 39082310), (4, 19541155), (5, 15632924), (10, 7816462), (20, 3908231), (1621, 48220), (2411, 32420), (3242, 24110), (4822, 16210), (6484, 12055), (8105, 9644)]