18806920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42743}}^1$

素因数の和:42765

約数の個数: 32

約数和(自身を含む): 46163520

約数和(自身を除く): 27356600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 42743, 85486, 170972, 213715, 341944, 427430, 470173, 854860, 940346, 1709720, 1880692, 2350865, 3761384, 4701730, 9403460, 18806920]

約数ペア:

[(1, 18806920), (2, 9403460), (4, 4701730), (5, 3761384), (8, 2350865), (10, 1880692), (11, 1709720), (20, 940346), (22, 854860), (40, 470173), (44, 427430), (55, 341944), (88, 213715), (110, 170972), (220, 85486), (440, 42743)]