197521701

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1789}}^1$

素因数の和:1973

約数の個数: 32

約数和(自身を含む): 300720000

約数和(自身を除く): 103198299

約数列:

[1, 3, 13, 19, 39, 57, 149, 247, 447, 741, 1789, 1937, 2831, 5367, 5811, 8493, 23257, 33991, 36803, 69771, 101973, 110409, 266561, 441883, 799683, 1325649, 3465293, 5064659, 10395879, 15193977, 65840567, 197521701]

約数ペア:

[(1, 197521701), (3, 65840567), (13, 15193977), (19, 10395879), (39, 5064659), (57, 3465293), (149, 1325649), (247, 799683), (447, 441883), (741, 266561), (1789, 110409), (1937, 101973), (2831, 69771), (5367, 36803), (5811, 33991), (8493, 23257)]