39500840

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1979}}^1$

素因数の和:2489

約数の個数: 32

約数和(自身を含む): 89100000

約数和(自身を除く): 49599160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 998, 1979, 1996, 2495, 3958, 3992, 4990, 7916, 9895, 9980, 15832, 19790, 19960, 39580, 79160, 987521, 1975042, 3950084, 4937605, 7900168, 9875210, 19750420, 39500840]

約数ペア:

[(1, 39500840), (2, 19750420), (4, 9875210), (5, 7900168), (8, 4937605), (10, 3950084), (20, 1975042), (40, 987521), (499, 79160), (998, 39580), (1979, 19960), (1996, 19790), (2495, 15832), (3958, 9980), (3992, 9895), (4990, 7916)]