85840840

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{15439}}^1$

素因数の和:15589

約数の個数: 32

約数和(自身を含む): 194544000

約数和(自身を除く): 108703160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 15439, 30878, 61756, 77195, 123512, 154390, 308780, 617560, 2146021, 4292042, 8584084, 10730105, 17168168, 21460210, 42920420, 85840840]

約数ペア:

[(1, 85840840), (2, 42920420), (4, 21460210), (5, 17168168), (8, 10730105), (10, 8584084), (20, 4292042), (40, 2146021), (139, 617560), (278, 308780), (556, 154390), (695, 123512), (1112, 77195), (1390, 61756), (2780, 30878), (5560, 15439)]