19209880

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4951}}^1$

素因数の和:5059

約数の個数: 32

約数和(自身を含む): 43676640

約数和(自身を除く): 24466760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4951, 9902, 19804, 24755, 39608, 49510, 99020, 198040, 480247, 960494, 1920988, 2401235, 3841976, 4802470, 9604940, 19209880]

約数ペア:

[(1, 19209880), (2, 9604940), (4, 4802470), (5, 3841976), (8, 2401235), (10, 1920988), (20, 960494), (40, 480247), (97, 198040), (194, 99020), (388, 49510), (485, 39608), (776, 24755), (970, 19804), (1940, 9902), (3880, 4951)]