21408237

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{1213}}^1$

素因数の和:1309

約数の個数: 24

約数和(自身を含む): 32384664

約数和(自身を除く): 10976427

約数列:

[1, 3, 9, 37, 53, 111, 159, 333, 477, 1213, 1961, 3639, 5883, 10917, 17649, 44881, 64289, 134643, 192867, 403929, 578601, 2378693, 7136079, 21408237]

約数ペア:

[(1, 21408237), (3, 7136079), (9, 2378693), (37, 578601), (53, 403929), (111, 192867), (159, 134643), (333, 64289), (477, 44881), (1213, 17649), (1961, 10917), (3639, 5883)]