20894031

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:253

約数の個数: 40

約数和(自身を含む): 33035904

約数和(自身を除く): 12141873

約数列:

[1, 3, 9, 27, 31, 53, 81, 93, 157, 159, 279, 471, 477, 837, 1413, 1431, 1643, 2511, 4239, 4293, 4867, 4929, 8321, 12717, 14601, 14787, 24963, 43803, 44361, 74889, 131409, 133083, 224667, 257951, 394227, 674001, 773853, 2321559, 6964677, 20894031]

約数ペア:

[(1, 20894031), (3, 6964677), (9, 2321559), (27, 773853), (31, 674001), (53, 394227), (81, 257951), (93, 224667), (157, 133083), (159, 131409), (279, 74889), (471, 44361), (477, 43803), (837, 24963), (1413, 14787), (1431, 14601), (1643, 12717), (2511, 8321), (4239, 4929), (4293, 4867)]