21046576

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{677}}^1$

素因数の和:781

約数の個数: 40

約数和(自身を含む): 42876720

約数和(自身を除く): 21830144

約数列:

[1, 2, 4, 8, 16, 29, 58, 67, 116, 134, 232, 268, 464, 536, 677, 1072, 1354, 1943, 2708, 3886, 5416, 7772, 10832, 15544, 19633, 31088, 39266, 45359, 78532, 90718, 157064, 181436, 314128, 362872, 725744, 1315411, 2630822, 5261644, 10523288, 21046576]

約数ペア:

[(1, 21046576), (2, 10523288), (4, 5261644), (8, 2630822), (16, 1315411), (29, 725744), (58, 362872), (67, 314128), (116, 181436), (134, 157064), (232, 90718), (268, 78532), (464, 45359), (536, 39266), (677, 31088), (1072, 19633), (1354, 15544), (1943, 10832), (2708, 7772), (3886, 5416)]