51385000

素因数分解:

$2^3\times 5^4\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:308

約数の個数: 80

約数和(自身を含む): 123710400

約数和(自身を除く): 72325400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 239, 250, 344, 430, 478, 500, 625, 860, 956, 1000, 1075, 1195, 1250, 1720, 1912, 2150, 2390, 2500, 4300, 4780, 5000, 5375, 5975, 8600, 9560, 10277, 10750, 11950, 20554, 21500, 23900, 26875, 29875, 41108, 43000, 47800, 51385, 53750, 59750, 82216, 102770, 107500, 119500, 149375, 205540, 215000, 239000, 256925, 298750, 411080, 513850, 597500, 1027700, 1195000, 1284625, 2055400, 2569250, 5138500, 6423125, 10277000, 12846250, 25692500, 51385000]

約数ペア:

[(1, 51385000), (2, 25692500), (4, 12846250), (5, 10277000), (8, 6423125), (10, 5138500), (20, 2569250), (25, 2055400), (40, 1284625), (43, 1195000), (50, 1027700), (86, 597500), (100, 513850), (125, 411080), (172, 298750), (200, 256925), (215, 239000), (239, 215000), (250, 205540), (344, 149375), (430, 119500), (478, 107500), (500, 102770), (625, 82216), (860, 59750), (956, 53750), (1000, 51385), (1075, 47800), (1195, 43000), (1250, 41108), (1720, 29875), (1912, 26875), (2150, 23900), (2390, 21500), (2500, 20554), (4300, 11950), (4780, 10750), (5000, 10277), (5375, 9560), (5975, 8600)]