20406589

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{953}}^1$

素因数の和:1009

約数の個数: 24

約数和(自身を含む): 26101440

約数和(自身を除く): 5694851

約数列:

[1, 7, 19, 23, 49, 133, 161, 437, 931, 953, 1127, 3059, 6671, 18107, 21413, 21919, 46697, 126749, 153433, 416461, 887243, 1074031, 2915227, 20406589]

約数ペア:

[(1, 20406589), (7, 2915227), (19, 1074031), (23, 887243), (49, 416461), (133, 153433), (161, 126749), (437, 46697), (931, 21919), (953, 21413), (1127, 18107), (3059, 6671)]