21400626

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 49029120

約数和(自身を除く): 27628494

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 78, 79, 138, 151, 158, 237, 299, 302, 453, 474, 598, 897, 906, 1027, 1794, 1817, 1963, 2054, 3081, 3473, 3634, 3926, 5451, 5889, 6162, 6946, 10419, 10902, 11778, 11929, 20838, 23621, 23858, 35787, 45149, 47242, 70863, 71574, 90298, 135447, 141726, 155077, 270894, 274367, 310154, 465231, 548734, 823101, 930462, 1646202, 3566771, 7133542, 10700313, 21400626]

約数ペア:

[(1, 21400626), (2, 10700313), (3, 7133542), (6, 3566771), (13, 1646202), (23, 930462), (26, 823101), (39, 548734), (46, 465231), (69, 310154), (78, 274367), (79, 270894), (138, 155077), (151, 141726), (158, 135447), (237, 90298), (299, 71574), (302, 70863), (453, 47242), (474, 45149), (598, 35787), (897, 23858), (906, 23621), (1027, 20838), (1794, 11929), (1817, 11778), (1963, 10902), (2054, 10419), (3081, 6946), (3473, 6162), (3634, 5889), (3926, 5451)]