21605556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:301

約数の個数: 96

約数和(自身を含む): 61544448

約数和(自身を除く): 39938892

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 42, 46, 53, 69, 84, 92, 106, 138, 159, 161, 211, 212, 276, 318, 322, 371, 422, 483, 633, 636, 644, 742, 844, 966, 1113, 1219, 1266, 1477, 1484, 1932, 2226, 2438, 2532, 2954, 3657, 4431, 4452, 4853, 4876, 5908, 7314, 8533, 8862, 9706, 11183, 14559, 14628, 17066, 17724, 19412, 22366, 25599, 29118, 33549, 33971, 34132, 44732, 51198, 58236, 67098, 67942, 78281, 101913, 102396, 134196, 135884, 156562, 203826, 234843, 257209, 313124, 407652, 469686, 514418, 771627, 939372, 1028836, 1543254, 1800463, 3086508, 3600926, 5401389, 7201852, 10802778, 21605556]

約数ペア:

[(1, 21605556), (2, 10802778), (3, 7201852), (4, 5401389), (6, 3600926), (7, 3086508), (12, 1800463), (14, 1543254), (21, 1028836), (23, 939372), (28, 771627), (42, 514418), (46, 469686), (53, 407652), (69, 313124), (84, 257209), (92, 234843), (106, 203826), (138, 156562), (159, 135884), (161, 134196), (211, 102396), (212, 101913), (276, 78281), (318, 67942), (322, 67098), (371, 58236), (422, 51198), (483, 44732), (633, 34132), (636, 33971), (644, 33549), (742, 29118), (844, 25599), (966, 22366), (1113, 19412), (1219, 17724), (1266, 17066), (1477, 14628), (1484, 14559), (1932, 11183), (2226, 9706), (2438, 8862), (2532, 8533), (2954, 7314), (3657, 5908), (4431, 4876), (4452, 4853)]