16985000

素因数分解:

$2^3\times 5^4\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:148

約数の個数: 80

約数和(自身を含む): 41236800

約数和(自身を除く): 24251800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 79, 86, 100, 125, 158, 172, 200, 215, 250, 316, 344, 395, 430, 500, 625, 632, 790, 860, 1000, 1075, 1250, 1580, 1720, 1975, 2150, 2500, 3160, 3397, 3950, 4300, 5000, 5375, 6794, 7900, 8600, 9875, 10750, 13588, 15800, 16985, 19750, 21500, 26875, 27176, 33970, 39500, 43000, 49375, 53750, 67940, 79000, 84925, 98750, 107500, 135880, 169850, 197500, 215000, 339700, 395000, 424625, 679400, 849250, 1698500, 2123125, 3397000, 4246250, 8492500, 16985000]

約数ペア:

[(1, 16985000), (2, 8492500), (4, 4246250), (5, 3397000), (8, 2123125), (10, 1698500), (20, 849250), (25, 679400), (40, 424625), (43, 395000), (50, 339700), (79, 215000), (86, 197500), (100, 169850), (125, 135880), (158, 107500), (172, 98750), (200, 84925), (215, 79000), (250, 67940), (316, 53750), (344, 49375), (395, 43000), (430, 39500), (500, 33970), (625, 27176), (632, 26875), (790, 21500), (860, 19750), (1000, 16985), (1075, 15800), (1250, 13588), (1580, 10750), (1720, 9875), (1975, 8600), (2150, 7900), (2500, 6794), (3160, 5375), (3397, 5000), (3950, 4300)]