856817720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{4337}}^1$

素因数の和:4808

約数の個数: 64

約数和(自身を含む): 2108268000

約数和(自身を除く): 1251450280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 449, 898, 1796, 2245, 3592, 4337, 4490, 4939, 8674, 8980, 9878, 17348, 17960, 19756, 21685, 24695, 34696, 39512, 43370, 47707, 49390, 86740, 95414, 98780, 173480, 190828, 197560, 238535, 381656, 477070, 954140, 1908280, 1947313, 3894626, 7789252, 9736565, 15578504, 19473130, 21420443, 38946260, 42840886, 77892520, 85681772, 107102215, 171363544, 214204430, 428408860, 856817720]

約数ペア:

[(1, 856817720), (2, 428408860), (4, 214204430), (5, 171363544), (8, 107102215), (10, 85681772), (11, 77892520), (20, 42840886), (22, 38946260), (40, 21420443), (44, 19473130), (55, 15578504), (88, 9736565), (110, 7789252), (220, 3894626), (440, 1947313), (449, 1908280), (898, 954140), (1796, 477070), (2245, 381656), (3592, 238535), (4337, 197560), (4490, 190828), (4939, 173480), (8674, 98780), (8980, 95414), (9878, 86740), (17348, 49390), (17960, 47707), (19756, 43370), (21685, 39512), (24695, 34696)]