400639690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{19069}}^1$

素因数の和:19278

約数の個数: 32

約数和(自身を含む): 790871040

約数和(自身を除く): 390231350

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191, 382, 955, 1910, 2101, 4202, 10505, 19069, 21010, 38138, 95345, 190690, 209759, 419518, 1048795, 2097590, 3642179, 7284358, 18210895, 36421790, 40063969, 80127938, 200319845, 400639690]

約数ペア:

[(1, 400639690), (2, 200319845), (5, 80127938), (10, 40063969), (11, 36421790), (22, 18210895), (55, 7284358), (110, 3642179), (191, 2097590), (382, 1048795), (955, 419518), (1910, 209759), (2101, 190690), (4202, 95345), (10505, 38138), (19069, 21010)]