21705882

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 50319360

約数和(自身を除く): 28613478

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 66, 69, 79, 138, 158, 181, 237, 253, 362, 474, 506, 543, 759, 869, 1086, 1518, 1738, 1817, 1991, 2607, 3634, 3982, 4163, 5214, 5451, 5973, 8326, 10902, 11946, 12489, 14299, 19987, 24978, 28598, 39974, 42897, 45793, 59961, 85794, 91586, 119922, 137379, 157289, 274758, 314578, 328877, 471867, 657754, 943734, 986631, 1973262, 3617647, 7235294, 10852941, 21705882]

約数ペア:

[(1, 21705882), (2, 10852941), (3, 7235294), (6, 3617647), (11, 1973262), (22, 986631), (23, 943734), (33, 657754), (46, 471867), (66, 328877), (69, 314578), (79, 274758), (138, 157289), (158, 137379), (181, 119922), (237, 91586), (253, 85794), (362, 59961), (474, 45793), (506, 42897), (543, 39974), (759, 28598), (869, 24978), (1086, 19987), (1518, 14299), (1738, 12489), (1817, 11946), (1991, 10902), (2607, 8326), (3634, 5973), (3982, 5451), (4163, 5214)]