78340880

素因数分解:

$2^4\times 5^1\times {\mathrm{979261}}^1$

素因数の和:979274

約数の個数: 20

約数和(自身を含む): 182142732

約数和(自身を除く): 103801852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 979261, 1958522, 3917044, 4896305, 7834088, 9792610, 15668176, 19585220, 39170440, 78340880]

約数ペア:

[(1, 78340880), (2, 39170440), (4, 19585220), (5, 15668176), (8, 9792610), (10, 7834088), (16, 4896305), (20, 3917044), (40, 1958522), (80, 979261)]