20423150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:617

約数の個数: 48

約数和(自身を含む): 42104448

約数和(自身を除く): 21681298

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 71, 110, 142, 275, 355, 523, 550, 710, 781, 1046, 1562, 1775, 2615, 3550, 3905, 5230, 5753, 7810, 11506, 13075, 19525, 26150, 28765, 37133, 39050, 57530, 74266, 143825, 185665, 287650, 371330, 408463, 816926, 928325, 1856650, 2042315, 4084630, 10211575, 20423150]

約数ペア:

[(1, 20423150), (2, 10211575), (5, 4084630), (10, 2042315), (11, 1856650), (22, 928325), (25, 816926), (50, 408463), (55, 371330), (71, 287650), (110, 185665), (142, 143825), (275, 74266), (355, 57530), (523, 39050), (550, 37133), (710, 28765), (781, 26150), (1046, 19525), (1562, 13075), (1775, 11506), (2615, 7810), (3550, 5753), (3905, 5230)]