87291560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{20021}}^1$

素因数の和:20141

約数の個数: 32

約数和(自身を含む): 198217800

約数和(自身を除く): 110926240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 20021, 40042, 80084, 100105, 160168, 200210, 400420, 800840, 2182289, 4364578, 8729156, 10911445, 17458312, 21822890, 43645780, 87291560]

約数ペア:

[(1, 87291560), (2, 43645780), (4, 21822890), (5, 17458312), (8, 10911445), (10, 8729156), (20, 4364578), (40, 2182289), (109, 800840), (218, 400420), (436, 200210), (545, 160168), (872, 100105), (1090, 80084), (2180, 40042), (4360, 20021)]