20830576

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:218

約数の個数: 80

約数和(自身を含む): 47434464

約数和(自身を除く): 26603888

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 43, 52, 68, 86, 104, 136, 137, 172, 208, 221, 272, 274, 344, 442, 548, 559, 688, 731, 884, 1096, 1118, 1462, 1768, 1781, 2192, 2236, 2329, 2924, 3536, 3562, 4472, 4658, 5848, 5891, 7124, 8944, 9316, 9503, 11696, 11782, 14248, 18632, 19006, 23564, 28496, 30277, 37264, 38012, 47128, 60554, 76024, 76583, 94256, 100147, 121108, 152048, 153166, 200294, 242216, 306332, 400588, 484432, 612664, 801176, 1225328, 1301911, 1602352, 2603822, 5207644, 10415288, 20830576]

約数ペア:

[(1, 20830576), (2, 10415288), (4, 5207644), (8, 2603822), (13, 1602352), (16, 1301911), (17, 1225328), (26, 801176), (34, 612664), (43, 484432), (52, 400588), (68, 306332), (86, 242216), (104, 200294), (136, 153166), (137, 152048), (172, 121108), (208, 100147), (221, 94256), (272, 76583), (274, 76024), (344, 60554), (442, 47128), (548, 38012), (559, 37264), (688, 30277), (731, 28496), (884, 23564), (1096, 19006), (1118, 18632), (1462, 14248), (1768, 11782), (1781, 11696), (2192, 9503), (2236, 9316), (2329, 8944), (2924, 7124), (3536, 5891), (3562, 5848), (4472, 4658)]