19781584

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65071}}^1$

素因数の和:65098

約数の個数: 20

約数和(自身を含む): 40344640

約数和(自身を除く): 20563056

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65071, 130142, 260284, 520568, 1041136, 1236349, 2472698, 4945396, 9890792, 19781584]

約数ペア:

[(1, 19781584), (2, 9890792), (4, 4945396), (8, 2472698), (16, 1236349), (19, 1041136), (38, 520568), (76, 260284), (152, 130142), (304, 65071)]