18554809

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 24192000

約数和(自身を除く): 5637191

約数列:

[1, 7, 13, 29, 79, 89, 91, 203, 377, 553, 623, 1027, 1157, 2291, 2581, 2639, 7031, 7189, 8099, 16037, 18067, 29783, 33553, 49217, 91403, 203899, 208481, 234871, 639821, 1427293, 2650687, 18554809]

約数ペア:

[(1, 18554809), (7, 2650687), (13, 1427293), (29, 639821), (79, 234871), (89, 208481), (91, 203899), (203, 91403), (377, 49217), (553, 33553), (623, 29783), (1027, 18067), (1157, 16037), (2291, 8099), (2581, 7189), (2639, 7031)]