18943743

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1$

素因数の和:484

約数の個数: 48

約数和(自身を含む): 33094656

約数和(自身を除く): 14150913

約数列:

[1, 3, 7, 13, 21, 23, 39, 49, 69, 91, 147, 161, 273, 299, 431, 483, 637, 897, 1127, 1293, 1911, 2093, 3017, 3381, 5603, 6279, 9051, 9913, 14651, 16809, 21119, 29739, 39221, 43953, 63357, 69391, 117663, 128869, 208173, 274547, 386607, 485737, 823641, 902083, 1457211, 2706249, 6314581, 18943743]

約数ペア:

[(1, 18943743), (3, 6314581), (7, 2706249), (13, 1457211), (21, 902083), (23, 823641), (39, 485737), (49, 386607), (69, 274547), (91, 208173), (147, 128869), (161, 117663), (273, 69391), (299, 63357), (431, 43953), (483, 39221), (637, 29739), (897, 21119), (1127, 16809), (1293, 14651), (1911, 9913), (2093, 9051), (3017, 6279), (3381, 5603)]