20174397520

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{277}}^1\times {\mathrm{31393}}^1$

素因数の和:31712

約数の個数: 80

約数和(自身を含む): 48699628560

約数和(自身を除く): 28525231040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 277, 290, 464, 554, 580, 1108, 1160, 1385, 2216, 2320, 2770, 4432, 5540, 8033, 11080, 16066, 22160, 31393, 32132, 40165, 62786, 64264, 80330, 125572, 128528, 156965, 160660, 251144, 313930, 321320, 502288, 627860, 642640, 910397, 1255720, 1820794, 2511440, 3641588, 4551985, 7283176, 8695861, 9103970, 14566352, 17391722, 18207940, 34783444, 36415880, 43479305, 69566888, 72831760, 86958610, 139133776, 173917220, 252179969, 347834440, 504359938, 695668880, 1008719876, 1260899845, 2017439752, 2521799690, 4034879504, 5043599380, 10087198760, 20174397520]

約数ペア:

[(1, 20174397520), (2, 10087198760), (4, 5043599380), (5, 4034879504), (8, 2521799690), (10, 2017439752), (16, 1260899845), (20, 1008719876), (29, 695668880), (40, 504359938), (58, 347834440), (80, 252179969), (116, 173917220), (145, 139133776), (232, 86958610), (277, 72831760), (290, 69566888), (464, 43479305), (554, 36415880), (580, 34783444), (1108, 18207940), (1160, 17391722), (1385, 14566352), (2216, 9103970), (2320, 8695861), (2770, 7283176), (4432, 4551985), (5540, 3641588), (8033, 2511440), (11080, 1820794), (16066, 1255720), (22160, 910397), (31393, 642640), (32132, 627860), (40165, 502288), (62786, 321320), (64264, 313930), (80330, 251144), (125572, 160660), (128528, 156965)]