19166721

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{197}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 30336768

約数和(自身を除く): 11170047

約数列:

[1, 3, 7, 21, 41, 113, 123, 197, 287, 339, 591, 791, 861, 1379, 2373, 4137, 4633, 8077, 13899, 22261, 24231, 32431, 56539, 66783, 97293, 155827, 169617, 467481, 912701, 2738103, 6388907, 19166721]

約数ペア:

[(1, 19166721), (3, 6388907), (7, 2738103), (21, 912701), (41, 467481), (113, 169617), (123, 155827), (197, 97293), (287, 66783), (339, 56539), (591, 32431), (791, 24231), (861, 22261), (1379, 13899), (2373, 8077), (4137, 4633)]