21517690

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1039}}^1$

素因数の和:1174

約数の個数: 32

約数和(自身を含む): 41184000

約数和(自身を除く): 19666310

約数列:

[1, 2, 5, 10, 19, 38, 95, 109, 190, 218, 545, 1039, 1090, 2071, 2078, 4142, 5195, 10355, 10390, 19741, 20710, 39482, 98705, 113251, 197410, 226502, 566255, 1132510, 2151769, 4303538, 10758845, 21517690]

約数ペア:

[(1, 21517690), (2, 10758845), (5, 4303538), (10, 2151769), (19, 1132510), (38, 566255), (95, 226502), (109, 197410), (190, 113251), (218, 98705), (545, 39482), (1039, 20710), (1090, 19741), (2071, 10390), (2078, 10355), (4142, 5195)]