21557718

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:179

約数の個数: 128

約数和(自身を含む): 60963840

約数和(自身を除く): 39406122

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 41, 42, 54, 63, 78, 82, 91, 107, 117, 123, 126, 182, 189, 214, 234, 246, 273, 287, 321, 351, 369, 378, 533, 546, 574, 642, 702, 738, 749, 819, 861, 963, 1066, 1107, 1391, 1498, 1599, 1638, 1722, 1926, 2214, 2247, 2457, 2583, 2782, 2889, 3198, 3731, 4173, 4387, 4494, 4797, 4914, 5166, 5778, 6741, 7462, 7749, 8346, 8774, 9594, 9737, 11193, 12519, 13161, 13482, 14391, 15498, 19474, 20223, 22386, 25038, 26322, 28782, 29211, 30709, 33579, 37557, 39483, 40446, 57031, 58422, 61418, 67158, 75114, 78966, 87633, 92127, 100737, 114062, 118449, 171093, 175266, 184254, 201474, 236898, 262899, 276381, 342186, 399217, 513279, 525798, 552762, 798434, 829143, 1026558, 1197651, 1539837, 1658286, 2395302, 3079674, 3592953, 7185906, 10778859, 21557718]

約数ペア:

[(1, 21557718), (2, 10778859), (3, 7185906), (6, 3592953), (7, 3079674), (9, 2395302), (13, 1658286), (14, 1539837), (18, 1197651), (21, 1026558), (26, 829143), (27, 798434), (39, 552762), (41, 525798), (42, 513279), (54, 399217), (63, 342186), (78, 276381), (82, 262899), (91, 236898), (107, 201474), (117, 184254), (123, 175266), (126, 171093), (182, 118449), (189, 114062), (214, 100737), (234, 92127), (246, 87633), (273, 78966), (287, 75114), (321, 67158), (351, 61418), (369, 58422), (378, 57031), (533, 40446), (546, 39483), (574, 37557), (642, 33579), (702, 30709), (738, 29211), (749, 28782), (819, 26322), (861, 25038), (963, 22386), (1066, 20223), (1107, 19474), (1391, 15498), (1498, 14391), (1599, 13482), (1638, 13161), (1722, 12519), (1926, 11193), (2214, 9737), (2247, 9594), (2457, 8774), (2583, 8346), (2782, 7749), (2889, 7462), (3198, 6741), (3731, 5778), (4173, 5166), (4387, 4914), (4494, 4797)]