21295386

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:321

約数の個数: 80

約数和(自身を含む): 55408320

約数和(自身を除く): 34112934

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 89, 126, 162, 178, 189, 211, 267, 378, 422, 534, 567, 623, 633, 801, 1134, 1246, 1266, 1477, 1602, 1869, 1899, 2403, 2954, 3738, 3798, 4431, 4806, 5607, 5697, 7209, 8862, 11214, 11394, 13293, 14418, 16821, 17091, 18779, 26586, 33642, 34182, 37558, 39879, 50463, 56337, 79758, 100926, 112674, 119637, 131453, 169011, 239274, 262906, 338022, 394359, 507033, 788718, 1014066, 1183077, 1521099, 2366154, 3042198, 3549231, 7098462, 10647693, 21295386]

約数ペア:

[(1, 21295386), (2, 10647693), (3, 7098462), (6, 3549231), (7, 3042198), (9, 2366154), (14, 1521099), (18, 1183077), (21, 1014066), (27, 788718), (42, 507033), (54, 394359), (63, 338022), (81, 262906), (89, 239274), (126, 169011), (162, 131453), (178, 119637), (189, 112674), (211, 100926), (267, 79758), (378, 56337), (422, 50463), (534, 39879), (567, 37558), (623, 34182), (633, 33642), (801, 26586), (1134, 18779), (1246, 17091), (1266, 16821), (1477, 14418), (1602, 13293), (1869, 11394), (1899, 11214), (2403, 8862), (2954, 7209), (3738, 5697), (3798, 5607), (4431, 4806)]