99979760

素因数分解:

$2^4\times 5^1\times {\mathrm{1249747}}^1$

素因数の和:1249760

約数の個数: 20

約数和(自身を含む): 232453128

約数和(自身を除く): 132473368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1249747, 2499494, 4998988, 6248735, 9997976, 12497470, 19995952, 24994940, 49989880, 99979760]

約数ペア:

[(1, 99979760), (2, 49989880), (4, 24994940), (5, 19995952), (8, 12497470), (10, 9997976), (16, 6248735), (20, 4998988), (40, 2499494), (80, 1249747)]