21009390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{821}}^1\times {\mathrm{853}}^1$

素因数の和:1684

約数の個数: 32

約数和(自身を含む): 50543136

約数和(自身を除く): 29533746

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 821, 853, 1642, 1706, 2463, 2559, 4105, 4265, 4926, 5118, 8210, 8530, 12315, 12795, 24630, 25590, 700313, 1400626, 2100939, 3501565, 4201878, 7003130, 10504695, 21009390]

約数ペア:

[(1, 21009390), (2, 10504695), (3, 7003130), (5, 4201878), (6, 3501565), (10, 2100939), (15, 1400626), (30, 700313), (821, 25590), (853, 24630), (1642, 12795), (1706, 12315), (2463, 8530), (2559, 8210), (4105, 5118), (4265, 4926)]