86636660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1999}}^1$

素因数の和:2216

約数の個数: 48

約数和(自身を含む): 199584000

約数和(自身を除く): 112947340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 197, 220, 394, 788, 985, 1970, 1999, 2167, 3940, 3998, 4334, 7996, 8668, 9995, 10835, 19990, 21670, 21989, 39980, 43340, 43978, 87956, 109945, 219890, 393803, 439780, 787606, 1575212, 1969015, 3938030, 4331833, 7876060, 8663666, 17327332, 21659165, 43318330, 86636660]

約数ペア:

[(1, 86636660), (2, 43318330), (4, 21659165), (5, 17327332), (10, 8663666), (11, 7876060), (20, 4331833), (22, 3938030), (44, 1969015), (55, 1575212), (110, 787606), (197, 439780), (220, 393803), (394, 219890), (788, 109945), (985, 87956), (1970, 43978), (1999, 43340), (2167, 39980), (3940, 21989), (3998, 21670), (4334, 19990), (7996, 10835), (8668, 9995)]