21158904

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{929}}^1$

素因数の和:1024

約数の個数: 64

約数和(自身を含む): 57808800

約数和(自身を除く): 36649896

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 73, 78, 104, 146, 156, 219, 292, 312, 438, 584, 876, 929, 949, 1752, 1858, 1898, 2787, 2847, 3716, 3796, 5574, 5694, 7432, 7592, 11148, 11388, 12077, 22296, 22776, 24154, 36231, 48308, 67817, 72462, 96616, 135634, 144924, 203451, 271268, 289848, 406902, 542536, 813804, 881621, 1627608, 1763242, 2644863, 3526484, 5289726, 7052968, 10579452, 21158904]

約数ペア:

[(1, 21158904), (2, 10579452), (3, 7052968), (4, 5289726), (6, 3526484), (8, 2644863), (12, 1763242), (13, 1627608), (24, 881621), (26, 813804), (39, 542536), (52, 406902), (73, 289848), (78, 271268), (104, 203451), (146, 144924), (156, 135634), (219, 96616), (292, 72462), (312, 67817), (438, 48308), (584, 36231), (876, 24154), (929, 22776), (949, 22296), (1752, 12077), (1858, 11388), (1898, 11148), (2787, 7592), (2847, 7432), (3716, 5694), (3796, 5574)]