21188080

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{67}}^2$

素因数の和:206

約数の個数: 60

約数和(自身を含む): 50856120

約数和(自身を除く): 29668040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 67, 80, 118, 134, 236, 268, 295, 335, 472, 536, 590, 670, 944, 1072, 1180, 1340, 2360, 2680, 3953, 4489, 4720, 5360, 7906, 8978, 15812, 17956, 19765, 22445, 31624, 35912, 39530, 44890, 63248, 71824, 79060, 89780, 158120, 179560, 264851, 316240, 359120, 529702, 1059404, 1324255, 2118808, 2648510, 4237616, 5297020, 10594040, 21188080]

約数ペア:

[(1, 21188080), (2, 10594040), (4, 5297020), (5, 4237616), (8, 2648510), (10, 2118808), (16, 1324255), (20, 1059404), (40, 529702), (59, 359120), (67, 316240), (80, 264851), (118, 179560), (134, 158120), (236, 89780), (268, 79060), (295, 71824), (335, 63248), (472, 44890), (536, 39530), (590, 35912), (670, 31624), (944, 22445), (1072, 19765), (1180, 17956), (1340, 15812), (2360, 8978), (2680, 7906), (3953, 5360), (4489, 4720)]