81212655

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 146562048

約数和(自身を除く): 65349393

約数列:

[1, 3, 5, 15, 17, 23, 51, 61, 69, 85, 115, 183, 227, 255, 305, 345, 391, 681, 915, 1037, 1135, 1173, 1403, 1955, 3111, 3405, 3859, 4209, 5185, 5221, 5865, 7015, 11577, 13847, 15555, 15663, 19295, 21045, 23851, 26105, 41541, 57885, 69235, 71553, 78315, 88757, 119255, 207705, 235399, 266271, 318481, 357765, 443785, 706197, 955443, 1176995, 1331355, 1592405, 3530985, 4777215, 5414177, 16242531, 27070885, 81212655]

約数ペア:

[(1, 81212655), (3, 27070885), (5, 16242531), (15, 5414177), (17, 4777215), (23, 3530985), (51, 1592405), (61, 1331355), (69, 1176995), (85, 955443), (115, 706197), (183, 443785), (227, 357765), (255, 318481), (305, 266271), (345, 235399), (391, 207705), (681, 119255), (915, 88757), (1037, 78315), (1135, 71553), (1173, 69235), (1403, 57885), (1955, 41541), (3111, 26105), (3405, 23851), (3859, 21045), (4209, 19295), (5185, 15663), (5221, 15555), (5865, 13847), (7015, 11577)]