21682610

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{821}}^1$

素因数の和:986

約数の個数: 32

約数和(自身を含む): 41428800

約数和(自身を除く): 19746190

約数列:

[1, 2, 5, 10, 19, 38, 95, 139, 190, 278, 695, 821, 1390, 1642, 2641, 4105, 5282, 8210, 13205, 15599, 26410, 31198, 77995, 114119, 155990, 228238, 570595, 1141190, 2168261, 4336522, 10841305, 21682610]

約数ペア:

[(1, 21682610), (2, 10841305), (5, 4336522), (10, 2168261), (19, 1141190), (38, 570595), (95, 228238), (139, 155990), (190, 114119), (278, 77995), (695, 31198), (821, 26410), (1390, 15599), (1642, 13205), (2641, 8210), (4105, 5282)]