21071085

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2749}}^1$

素因数の和:2837

約数の個数: 32

約数和(自身を含む): 39072000

約数和(自身を除く): 18000915

約数列:

[1, 3, 5, 7, 15, 21, 35, 73, 105, 219, 365, 511, 1095, 1533, 2555, 2749, 7665, 8247, 13745, 19243, 41235, 57729, 96215, 200677, 288645, 602031, 1003385, 1404739, 3010155, 4214217, 7023695, 21071085]

約数ペア:

[(1, 21071085), (3, 7023695), (5, 4214217), (7, 3010155), (15, 1404739), (21, 1003385), (35, 602031), (73, 288645), (105, 200677), (219, 96215), (365, 57729), (511, 41235), (1095, 19243), (1533, 13745), (2555, 8247), (2749, 7665)]