21167680

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2281}}^1$

素因数の和:2327

約数の個数: 56

約数和(自身を含む): 52166520

約数和(自身を除く): 30998840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 145, 160, 232, 290, 320, 464, 580, 928, 1160, 1856, 2281, 2320, 4562, 4640, 9124, 9280, 11405, 18248, 22810, 36496, 45620, 66149, 72992, 91240, 132298, 145984, 182480, 264596, 330745, 364960, 529192, 661490, 729920, 1058384, 1322980, 2116768, 2645960, 4233536, 5291920, 10583840, 21167680]

約数ペア:

[(1, 21167680), (2, 10583840), (4, 5291920), (5, 4233536), (8, 2645960), (10, 2116768), (16, 1322980), (20, 1058384), (29, 729920), (32, 661490), (40, 529192), (58, 364960), (64, 330745), (80, 264596), (116, 182480), (145, 145984), (160, 132298), (232, 91240), (290, 72992), (320, 66149), (464, 45620), (580, 36496), (928, 22810), (1160, 18248), (1856, 11405), (2281, 9280), (2320, 9124), (4562, 4640)]