21003138

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{9973}}^1$

素因数の和:10000

約数の個数: 40

約数和(自身を含む): 50687868

約数和(自身を除く): 29684730

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 234, 351, 702, 1053, 2106, 9973, 19946, 29919, 59838, 89757, 129649, 179514, 259298, 269271, 388947, 538542, 777894, 807813, 1166841, 1615626, 2333682, 3500523, 7001046, 10501569, 21003138]

約数ペア:

[(1, 21003138), (2, 10501569), (3, 7001046), (6, 3500523), (9, 2333682), (13, 1615626), (18, 1166841), (26, 807813), (27, 777894), (39, 538542), (54, 388947), (78, 269271), (81, 259298), (117, 179514), (162, 129649), (234, 89757), (351, 59838), (702, 29919), (1053, 19946), (2106, 9973)]