18928921

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^2$

素因数の和:165

約数の個数: 24

約数和(自身を含む): 22750560

約数和(自身を除く): 3821639

約数列:

[1, 11, 19, 41, 47, 209, 451, 517, 779, 893, 1927, 2209, 8569, 9823, 21197, 24299, 36613, 41971, 90569, 402743, 461681, 996259, 1720811, 18928921]

約数ペア:

[(1, 18928921), (11, 1720811), (19, 996259), (41, 461681), (47, 402743), (209, 90569), (451, 41971), (517, 36613), (779, 24299), (893, 21197), (1927, 9823), (2209, 8569)]