21424144

素因数分解:

$2^4\times 7^1\times {\mathrm{197}}^1\times {\mathrm{971}}^1$

素因数の和:1183

約数の個数: 40

約数和(自身を含む): 47729088

約数和(自身を除く): 26304944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 197, 394, 788, 971, 1379, 1576, 1942, 2758, 3152, 3884, 5516, 6797, 7768, 11032, 13594, 15536, 22064, 27188, 54376, 108752, 191287, 382574, 765148, 1339009, 1530296, 2678018, 3060592, 5356036, 10712072, 21424144]

約数ペア:

[(1, 21424144), (2, 10712072), (4, 5356036), (7, 3060592), (8, 2678018), (14, 1530296), (16, 1339009), (28, 765148), (56, 382574), (112, 191287), (197, 108752), (394, 54376), (788, 27188), (971, 22064), (1379, 15536), (1576, 13594), (1942, 11032), (2758, 7768), (3152, 6797), (3884, 5516)]