21354904

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{1109}}^1$

素因数の和:1227

約数の個数: 32

約数和(自身を含む): 41958000

約数和(自身を除く): 20603096

約数列:

[1, 2, 4, 8, 29, 58, 83, 116, 166, 232, 332, 664, 1109, 2218, 2407, 4436, 4814, 8872, 9628, 19256, 32161, 64322, 92047, 128644, 184094, 257288, 368188, 736376, 2669363, 5338726, 10677452, 21354904]

約数ペア:

[(1, 21354904), (2, 10677452), (4, 5338726), (8, 2669363), (29, 736376), (58, 368188), (83, 257288), (116, 184094), (166, 128644), (232, 92047), (332, 64322), (664, 32161), (1109, 19256), (2218, 9628), (2407, 8872), (4436, 4814)]