22178840

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3989}}^1$

素因数の和:4139

約数の個数: 32

約数和(自身を含む): 50274000

約数和(自身を除く): 28095160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3989, 5560, 7978, 15956, 19945, 31912, 39890, 79780, 159560, 554471, 1108942, 2217884, 2772355, 4435768, 5544710, 11089420, 22178840]

約数ペア:

[(1, 22178840), (2, 11089420), (4, 5544710), (5, 4435768), (8, 2772355), (10, 2217884), (20, 1108942), (40, 554471), (139, 159560), (278, 79780), (556, 39890), (695, 31912), (1112, 19945), (1390, 15956), (2780, 7978), (3989, 5560)]