668821780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{104831}}^1$

素因数の和:104880

約数の個数: 48

約数和(自身を含む): 1585059840

約数和(自身を除く): 916238060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 290, 319, 580, 638, 1276, 1595, 3190, 6380, 104831, 209662, 419324, 524155, 1048310, 1153141, 2096620, 2306282, 3040099, 4612564, 5765705, 6080198, 11531410, 12160396, 15200495, 23062820, 30400990, 33441089, 60801980, 66882178, 133764356, 167205445, 334410890, 668821780]

約数ペア:

[(1, 668821780), (2, 334410890), (4, 167205445), (5, 133764356), (10, 66882178), (11, 60801980), (20, 33441089), (22, 30400990), (29, 23062820), (44, 15200495), (55, 12160396), (58, 11531410), (110, 6080198), (116, 5765705), (145, 4612564), (220, 3040099), (290, 2306282), (319, 2096620), (580, 1153141), (638, 1048310), (1276, 524155), (1595, 419324), (3190, 209662), (6380, 104831)]