19884543

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 33406560

約数和(自身を除く): 13522017

約数列:

[1, 3, 7, 17, 21, 49, 51, 73, 109, 119, 147, 219, 327, 357, 511, 763, 833, 1241, 1533, 1853, 2289, 2499, 3577, 3723, 5341, 5559, 7957, 8687, 10731, 12971, 16023, 23871, 26061, 38913, 55699, 60809, 90797, 135269, 167097, 182427, 272391, 389893, 405807, 946883, 1169679, 2840649, 6628181, 19884543]

約数ペア:

[(1, 19884543), (3, 6628181), (7, 2840649), (17, 1169679), (21, 946883), (49, 405807), (51, 389893), (73, 272391), (109, 182427), (119, 167097), (147, 135269), (219, 90797), (327, 60809), (357, 55699), (511, 38913), (763, 26061), (833, 23871), (1241, 16023), (1533, 12971), (1853, 10731), (2289, 8687), (2499, 7957), (3577, 5559), (3723, 5341)]