16990375

素因数分解:

$5^3\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:196

約数の個数: 32

約数和(自身を含む): 22651200

約数和(自身を除く): 5660825

約数列:

[1, 5, 25, 29, 43, 109, 125, 145, 215, 545, 725, 1075, 1247, 2725, 3161, 3625, 4687, 5375, 6235, 13625, 15805, 23435, 31175, 79025, 117175, 135923, 155875, 395125, 585875, 679615, 3398075, 16990375]

約数ペア:

[(1, 16990375), (5, 3398075), (25, 679615), (29, 585875), (43, 395125), (109, 155875), (125, 135923), (145, 117175), (215, 79025), (545, 31175), (725, 23435), (1075, 15805), (1247, 13625), (2725, 6235), (3161, 5375), (3625, 4687)]