21469040

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^2$

素因数の和:214

約数の個数: 60

約数和(自身を含む): 51731064

約数和(自身を除く): 30262024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 79, 80, 86, 158, 172, 215, 316, 344, 395, 430, 632, 688, 790, 860, 1264, 1580, 1720, 3160, 3397, 3440, 6241, 6320, 6794, 12482, 13588, 16985, 24964, 27176, 31205, 33970, 49928, 54352, 62410, 67940, 99856, 124820, 135880, 249640, 268363, 271760, 499280, 536726, 1073452, 1341815, 2146904, 2683630, 4293808, 5367260, 10734520, 21469040]

約数ペア:

[(1, 21469040), (2, 10734520), (4, 5367260), (5, 4293808), (8, 2683630), (10, 2146904), (16, 1341815), (20, 1073452), (40, 536726), (43, 499280), (79, 271760), (80, 268363), (86, 249640), (158, 135880), (172, 124820), (215, 99856), (316, 67940), (344, 62410), (395, 54352), (430, 49928), (632, 33970), (688, 31205), (790, 27176), (860, 24964), (1264, 16985), (1580, 13588), (1720, 12482), (3160, 6794), (3397, 6320), (3440, 6241)]