40009991

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 49158144

約数和(自身を除く): 9148153

約数列:

[1, 7, 19, 71, 133, 223, 361, 497, 1349, 1561, 2527, 4237, 9443, 15833, 25631, 29659, 80503, 110831, 179417, 300827, 563521, 2105789, 5715713, 40009991]

約数ペア:

[(1, 40009991), (7, 5715713), (19, 2105789), (71, 563521), (133, 300827), (223, 179417), (361, 110831), (497, 80503), (1349, 29659), (1561, 25631), (2527, 15833), (4237, 9443)]