18723341

素因数分解:

$7^3\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:83

約数の個数: 48

約数和(自身を含む): 26352000

約数和(自身を除く): 7628659

約数列:

[1, 7, 13, 17, 19, 49, 91, 119, 133, 169, 221, 247, 323, 343, 637, 833, 931, 1183, 1547, 1729, 2261, 2873, 3211, 4199, 4459, 5831, 6517, 8281, 10829, 12103, 15827, 20111, 22477, 29393, 54587, 57967, 75803, 84721, 110789, 140777, 157339, 205751, 382109, 985439, 1101373, 1440257, 2674763, 18723341]

約数ペア:

[(1, 18723341), (7, 2674763), (13, 1440257), (17, 1101373), (19, 985439), (49, 382109), (91, 205751), (119, 157339), (133, 140777), (169, 110789), (221, 84721), (247, 75803), (323, 57967), (343, 54587), (637, 29393), (833, 22477), (931, 20111), (1183, 15827), (1547, 12103), (1729, 10829), (2261, 8281), (2873, 6517), (3211, 5831), (4199, 4459)]