81911918

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{271}}^1\times {\mathrm{1249}}^1$

素因数の和:1544

約数の個数: 24

約数和(自身を含む): 135660000

約数和(自身を除く): 53748082

約数列:

[1, 2, 11, 22, 121, 242, 271, 542, 1249, 2498, 2981, 5962, 13739, 27478, 32791, 65582, 151129, 302258, 338479, 676958, 3723269, 7446538, 40955959, 81911918]

約数ペア:

[(1, 81911918), (2, 40955959), (11, 7446538), (22, 3723269), (121, 676958), (242, 338479), (271, 302258), (542, 151129), (1249, 65582), (2498, 32791), (2981, 27478), (5962, 13739)]