18664580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1973}}^1$

素因数の和:2036

約数の個数: 48

約数和(自身を含む): 43775424

約数和(自身を除く): 25110844

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 1973, 2365, 3946, 4730, 7892, 9460, 9865, 19730, 21703, 39460, 43406, 84839, 86812, 108515, 169678, 217030, 339356, 424195, 434060, 848390, 933229, 1696780, 1866458, 3732916, 4666145, 9332290, 18664580]

約数ペア:

[(1, 18664580), (2, 9332290), (4, 4666145), (5, 3732916), (10, 1866458), (11, 1696780), (20, 933229), (22, 848390), (43, 434060), (44, 424195), (55, 339356), (86, 217030), (110, 169678), (172, 108515), (215, 86812), (220, 84839), (430, 43406), (473, 39460), (860, 21703), (946, 19730), (1892, 9865), (1973, 9460), (2365, 7892), (3946, 4730)]