9991960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22709}}^1$

素因数の和:22731

約数の個数: 32

約数和(自身を含む): 24526800

約数和(自身を除く): 14534840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 22709, 45418, 90836, 113545, 181672, 227090, 249799, 454180, 499598, 908360, 999196, 1248995, 1998392, 2497990, 4995980, 9991960]

約数ペア:

[(1, 9991960), (2, 4995980), (4, 2497990), (5, 1998392), (8, 1248995), (10, 999196), (11, 908360), (20, 499598), (22, 454180), (40, 249799), (44, 227090), (55, 181672), (88, 113545), (110, 90836), (220, 45418), (440, 22709)]