81342680

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{70123}}^1$

素因数の和:70163

約数の個数: 32

約数和(自身を含む): 189334800

約数和(自身を除く): 107992120

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 70123, 140246, 280492, 350615, 560984, 701230, 1402460, 2033567, 2804920, 4067134, 8134268, 10167835, 16268536, 20335670, 40671340, 81342680]

約数ペア:

[(1, 81342680), (2, 40671340), (4, 20335670), (5, 16268536), (8, 10167835), (10, 8134268), (20, 4067134), (29, 2804920), (40, 2033567), (58, 1402460), (116, 701230), (145, 560984), (232, 350615), (290, 280492), (580, 140246), (1160, 70123)]