8987990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{809}}^1$

素因数の和:928

約数の個数: 32

約数和(自身を含む): 17845920

約数和(自身を除く): 8857930

約数列:

[1, 2, 5, 10, 11, 22, 55, 101, 110, 202, 505, 809, 1010, 1111, 1618, 2222, 4045, 5555, 8090, 8899, 11110, 17798, 44495, 81709, 88990, 163418, 408545, 817090, 898799, 1797598, 4493995, 8987990]

約数ペア:

[(1, 8987990), (2, 4493995), (5, 1797598), (10, 898799), (11, 817090), (22, 408545), (55, 163418), (101, 88990), (110, 81709), (202, 44495), (505, 17798), (809, 11110), (1010, 8899), (1111, 8090), (1618, 5555), (2222, 4045)]