21790568

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{271}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 45124800

約数和(自身を除く): 23334232

約数列:

[1, 2, 4, 8, 19, 23, 38, 46, 76, 92, 152, 184, 271, 437, 529, 542, 874, 1058, 1084, 1748, 2116, 2168, 3496, 4232, 5149, 6233, 10051, 10298, 12466, 20102, 20596, 24932, 40204, 41192, 49864, 80408, 118427, 143359, 236854, 286718, 473708, 573436, 947416, 1146872, 2723821, 5447642, 10895284, 21790568]

約数ペア:

[(1, 21790568), (2, 10895284), (4, 5447642), (8, 2723821), (19, 1146872), (23, 947416), (38, 573436), (46, 473708), (76, 286718), (92, 236854), (152, 143359), (184, 118427), (271, 80408), (437, 49864), (529, 41192), (542, 40204), (874, 24932), (1058, 20596), (1084, 20102), (1748, 12466), (2116, 10298), (2168, 10051), (3496, 6233), (4232, 5149)]