19778829

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{2609}}^1$

素因数の和:2657

約数の個数: 24

約数和(自身を含む): 31821120

約数和(自身を除く): 12042291

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 2609, 7581, 7827, 18263, 49571, 54789, 148713, 346997, 941849, 1040991, 2825547, 6592943, 19778829]

約数ペア:

[(1, 19778829), (3, 6592943), (7, 2825547), (19, 1040991), (21, 941849), (57, 346997), (133, 148713), (361, 54789), (399, 49571), (1083, 18263), (2527, 7827), (2609, 7581)]