85687280

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{21859}}^1$

素因数の和:21886

約数の個数: 60

約数和(自身を含む): 231759720

約数和(自身を除く): 146072440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 21859, 43718, 87436, 109295, 153013, 174872, 218590, 306026, 349744, 437180, 612052, 765065, 874360, 1071091, 1224104, 1530130, 1748720, 2142182, 2448208, 3060260, 4284364, 5355455, 6120520, 8568728, 10710910, 12241040, 17137456, 21421820, 42843640, 85687280]

約数ペア:

[(1, 85687280), (2, 42843640), (4, 21421820), (5, 17137456), (7, 12241040), (8, 10710910), (10, 8568728), (14, 6120520), (16, 5355455), (20, 4284364), (28, 3060260), (35, 2448208), (40, 2142182), (49, 1748720), (56, 1530130), (70, 1224104), (80, 1071091), (98, 874360), (112, 765065), (140, 612052), (196, 437180), (245, 349744), (280, 306026), (392, 218590), (490, 174872), (560, 153013), (784, 109295), (980, 87436), (1960, 43718), (3920, 21859)]