71990420

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{7331}}^1$

素因数の和:7831

約数の個数: 24

約数和(自身を含む): 151508448

約数和(自身を除く): 79518028

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 7331, 9820, 14662, 29324, 36655, 73310, 146620, 3599521, 7199042, 14398084, 17997605, 35995210, 71990420]

約数ペア:

[(1, 71990420), (2, 35995210), (4, 17997605), (5, 14398084), (10, 7199042), (20, 3599521), (491, 146620), (982, 73310), (1964, 36655), (2455, 29324), (4910, 14662), (7331, 9820)]