19952667

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 34794240

約数和(自身を除く): 14841573

約数列:

[1, 3, 7, 9, 21, 29, 63, 67, 87, 163, 201, 203, 261, 469, 489, 603, 609, 1141, 1407, 1467, 1827, 1943, 3423, 4221, 4727, 5829, 10269, 10921, 13601, 14181, 17487, 32763, 33089, 40803, 42543, 76447, 98289, 99267, 122409, 229341, 297801, 316709, 688023, 950127, 2216963, 2850381, 6650889, 19952667]

約数ペア:

[(1, 19952667), (3, 6650889), (7, 2850381), (9, 2216963), (21, 950127), (29, 688023), (63, 316709), (67, 297801), (87, 229341), (163, 122409), (201, 99267), (203, 98289), (261, 76447), (469, 42543), (489, 40803), (603, 33089), (609, 32763), (1141, 17487), (1407, 14181), (1467, 13601), (1827, 10921), (1943, 10269), (3423, 5829), (4221, 4727)]