20123988

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4289}}^1$

素因数の和:4336

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 31767852

約数列:

[1, 2, 3, 4, 6, 12, 17, 23, 34, 46, 51, 68, 69, 92, 102, 138, 204, 276, 391, 782, 1173, 1564, 2346, 4289, 4692, 8578, 12867, 17156, 25734, 51468, 72913, 98647, 145826, 197294, 218739, 291652, 295941, 394588, 437478, 591882, 874956, 1183764, 1676999, 3353998, 5030997, 6707996, 10061994, 20123988]

約数ペア:

[(1, 20123988), (2, 10061994), (3, 6707996), (4, 5030997), (6, 3353998), (12, 1676999), (17, 1183764), (23, 874956), (34, 591882), (46, 437478), (51, 394588), (68, 295941), (69, 291652), (92, 218739), (102, 197294), (138, 145826), (204, 98647), (276, 72913), (391, 51468), (782, 25734), (1173, 17156), (1564, 12867), (2346, 8578), (4289, 4692)]