87913240

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{4513}}^1$

素因数の和:5011

約数の個数: 32

約数和(自身を含む): 198254880

約数和(自身を除く): 110341640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4513, 4870, 9026, 9740, 18052, 19480, 22565, 36104, 45130, 90260, 180520, 2197831, 4395662, 8791324, 10989155, 17582648, 21978310, 43956620, 87913240]

約数ペア:

[(1, 87913240), (2, 43956620), (4, 21978310), (5, 17582648), (8, 10989155), (10, 8791324), (20, 4395662), (40, 2197831), (487, 180520), (974, 90260), (1948, 45130), (2435, 36104), (3896, 22565), (4513, 19480), (4870, 18052), (9026, 9740)]