21371301

素因数分解:

$3^2\times 7^4\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:100

約数の個数: 60

約数和(自身を含む): 38452128

約数和(自身を除く): 17080827

約数列:

[1, 3, 7, 9, 21, 23, 43, 49, 63, 69, 129, 147, 161, 207, 301, 343, 387, 441, 483, 903, 989, 1029, 1127, 1449, 2107, 2401, 2709, 2967, 3087, 3381, 6321, 6923, 7203, 7889, 8901, 10143, 14749, 18963, 20769, 21609, 23667, 44247, 48461, 55223, 62307, 71001, 103243, 132741, 145383, 165669, 309729, 339227, 436149, 497007, 929187, 1017681, 2374589, 3053043, 7123767, 21371301]

約数ペア:

[(1, 21371301), (3, 7123767), (7, 3053043), (9, 2374589), (21, 1017681), (23, 929187), (43, 497007), (49, 436149), (63, 339227), (69, 309729), (129, 165669), (147, 145383), (161, 132741), (207, 103243), (301, 71001), (343, 62307), (387, 55223), (441, 48461), (483, 44247), (903, 23667), (989, 21609), (1029, 20769), (1127, 18963), (1449, 14749), (2107, 10143), (2401, 8901), (2709, 7889), (2967, 7203), (3087, 6923), (3381, 6321)]