18945641

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{367}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 23554944

約数和(自身を除く): 4609303

約数列:

[1, 11, 13, 19, 143, 209, 247, 361, 367, 2717, 3971, 4037, 4693, 4771, 6973, 51623, 52481, 76703, 90649, 132487, 997139, 1457357, 1722331, 18945641]

約数ペア:

[(1, 18945641), (11, 1722331), (13, 1457357), (19, 997139), (143, 132487), (209, 90649), (247, 76703), (361, 52481), (367, 51623), (2717, 6973), (3971, 4771), (4037, 4693)]