21697487

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 28062720

約数和(自身を除く): 6365233

約数列:

[1, 7, 19, 23, 41, 133, 161, 173, 287, 437, 779, 943, 1211, 3059, 3287, 3979, 5453, 6601, 7093, 17917, 23009, 27853, 49651, 75601, 125419, 134767, 163139, 529207, 943369, 1141973, 3099641, 21697487]

約数ペア:

[(1, 21697487), (7, 3099641), (19, 1141973), (23, 943369), (41, 529207), (133, 163139), (161, 134767), (173, 125419), (287, 75601), (437, 49651), (779, 27853), (943, 23009), (1211, 17917), (3059, 7093), (3287, 6601), (3979, 5453)]