15963880

素因数分解:

$2^3\times 5^1\times {\mathrm{399097}}^1$

素因数の和:399108

約数の個数: 16

約数和(自身を含む): 35918820

約数和(自身を除く): 19954940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 399097, 798194, 1596388, 1995485, 3192776, 3990970, 7981940, 15963880]

約数ペア:

[(1, 15963880), (2, 7981940), (4, 3990970), (5, 3192776), (8, 1995485), (10, 1596388), (20, 798194), (40, 399097)]