21646887

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 31664640

約数和(自身を除く): 10017753

約数列:

[1, 3, 23, 37, 61, 69, 111, 139, 183, 417, 851, 1403, 2257, 2553, 3197, 4209, 5143, 6771, 8479, 9591, 15429, 25437, 51911, 118289, 155733, 195017, 313723, 354867, 585051, 941169, 7215629, 21646887]

約数ペア:

[(1, 21646887), (3, 7215629), (23, 941169), (37, 585051), (61, 354867), (69, 313723), (111, 195017), (139, 155733), (183, 118289), (417, 51911), (851, 25437), (1403, 15429), (2257, 9591), (2553, 8479), (3197, 6771), (4209, 5143)]