21612045

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 43352064

約数和(自身を除く): 21740019

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 71, 91, 105, 195, 213, 223, 273, 355, 455, 497, 669, 923, 1065, 1115, 1365, 1491, 1561, 2485, 2769, 2899, 3345, 4615, 4683, 6461, 7455, 7805, 8697, 13845, 14495, 15833, 19383, 20293, 23415, 32305, 43485, 47499, 60879, 79165, 96915, 101465, 110831, 205829, 237495, 304395, 332493, 554155, 617487, 1029145, 1440803, 1662465, 3087435, 4322409, 7204015, 21612045]

約数ペア:

[(1, 21612045), (3, 7204015), (5, 4322409), (7, 3087435), (13, 1662465), (15, 1440803), (21, 1029145), (35, 617487), (39, 554155), (65, 332493), (71, 304395), (91, 237495), (105, 205829), (195, 110831), (213, 101465), (223, 96915), (273, 79165), (355, 60879), (455, 47499), (497, 43485), (669, 32305), (923, 23415), (1065, 20293), (1115, 19383), (1365, 15833), (1491, 14495), (1561, 13845), (2485, 8697), (2769, 7805), (2899, 7455), (3345, 6461), (4615, 4683)]