978890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{809}}^1$

素因数の和:838

約数の個数: 24

約数和(自身を含む): 1939140

約数和(自身を除く): 960250

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 809, 1210, 1618, 4045, 8090, 8899, 17798, 44495, 88990, 97889, 195778, 489445, 978890]

約数ペア:

[(1, 978890), (2, 489445), (5, 195778), (10, 97889), (11, 88990), (22, 44495), (55, 17798), (110, 8899), (121, 8090), (242, 4045), (605, 1618), (809, 1210)]