21000407048

素因数分解:

$2^3\times {\mathrm{23}}^2\times {\mathrm{61}}^1\times {\mathrm{81349}}^1$

素因数の和:81462

約数の個数: 48

約数和(自身を含む): 41837491500

約数和(自身を除く): 20837084452

約数列:

[1, 2, 4, 8, 23, 46, 61, 92, 122, 184, 244, 488, 529, 1058, 1403, 2116, 2806, 4232, 5612, 11224, 32269, 64538, 81349, 129076, 162698, 258152, 325396, 650792, 1871027, 3742054, 4962289, 7484108, 9924578, 14968216, 19849156, 39698312, 43033621, 86067242, 114132647, 172134484, 228265294, 344268968, 456530588, 913061176, 2625050881, 5250101762, 10500203524, 21000407048]

約数ペア:

[(1, 21000407048), (2, 10500203524), (4, 5250101762), (8, 2625050881), (23, 913061176), (46, 456530588), (61, 344268968), (92, 228265294), (122, 172134484), (184, 114132647), (244, 86067242), (488, 43033621), (529, 39698312), (1058, 19849156), (1403, 14968216), (2116, 9924578), (2806, 7484108), (4232, 4962289), (5612, 3742054), (11224, 1871027), (32269, 650792), (64538, 325396), (81349, 258152), (129076, 162698)]