21658645010

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{821}}^1\times {\mathrm{18979}}^1$

素因数の和:19946

約数の個数: 32

約数和(自身を含む): 39315931200

約数和(自身を除く): 17657286190

約数列:

[1, 2, 5, 10, 139, 278, 695, 821, 1390, 1642, 4105, 8210, 18979, 37958, 94895, 114119, 189790, 228238, 570595, 1141190, 2638081, 5276162, 13190405, 15581759, 26380810, 31163518, 77908795, 155817590, 2165864501, 4331729002, 10829322505, 21658645010]

約数ペア:

[(1, 21658645010), (2, 10829322505), (5, 4331729002), (10, 2165864501), (139, 155817590), (278, 77908795), (695, 31163518), (821, 26380810), (1390, 15581759), (1642, 13190405), (4105, 5276162), (8210, 2638081), (18979, 1141190), (37958, 570595), (94895, 228238), (114119, 189790)]