19908500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1373}}^1$

素因数の和:1421

約数の個数: 48

約数和(自身を含む): 45012240

約数和(自身を除く): 25103740

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 145, 250, 290, 500, 580, 725, 1373, 1450, 2746, 2900, 3625, 5492, 6865, 7250, 13730, 14500, 27460, 34325, 39817, 68650, 79634, 137300, 159268, 171625, 199085, 343250, 398170, 686500, 796340, 995425, 1990850, 3981700, 4977125, 9954250, 19908500]

約数ペア:

[(1, 19908500), (2, 9954250), (4, 4977125), (5, 3981700), (10, 1990850), (20, 995425), (25, 796340), (29, 686500), (50, 398170), (58, 343250), (100, 199085), (116, 171625), (125, 159268), (145, 137300), (250, 79634), (290, 68650), (500, 39817), (580, 34325), (725, 27460), (1373, 14500), (1450, 13730), (2746, 7250), (2900, 6865), (3625, 5492)]