86881781

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1\times {\mathrm{641}}^1$

素因数の和:749

約数の個数: 24

約数和(自身を含む): 107219136

約数和(自身を除く): 20337355

約数列:

[1, 7, 17, 67, 119, 289, 469, 641, 1139, 2023, 4487, 7973, 10897, 19363, 42947, 76279, 135541, 185249, 300629, 730099, 1296743, 5110693, 12411683, 86881781]

約数ペア:

[(1, 86881781), (7, 12411683), (17, 5110693), (67, 1296743), (119, 730099), (289, 300629), (469, 185249), (641, 135541), (1139, 76279), (2023, 42947), (4487, 19363), (7973, 10897)]