638285753

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{1039}}^1$

素因数の和:1245

約数の個数: 32

約数和(自身を含む): 798720000

約数和(自身を除く): 160434247

約数列:

[1, 7, 19, 31, 133, 149, 217, 589, 1039, 1043, 2831, 4123, 4619, 7273, 19741, 19817, 32209, 32333, 87761, 138187, 154811, 225463, 611971, 614327, 1083677, 2941409, 4283797, 4799141, 20589863, 33593987, 91183679, 638285753]

約数ペア:

[(1, 638285753), (7, 91183679), (19, 33593987), (31, 20589863), (133, 4799141), (149, 4283797), (217, 2941409), (589, 1083677), (1039, 614327), (1043, 611971), (2831, 225463), (4123, 154811), (4619, 138187), (7273, 87761), (19741, 32333), (19817, 32209)]