21646835

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 31186944

約数和(自身を除く): 9540109

約数列:

[1, 5, 7, 31, 35, 71, 155, 217, 281, 355, 497, 1085, 1405, 1967, 2201, 2485, 8711, 9835, 11005, 15407, 19951, 43555, 60977, 77035, 99755, 139657, 304885, 618481, 698285, 3092405, 4329367, 21646835]

約数ペア:

[(1, 21646835), (5, 4329367), (7, 3092405), (31, 698285), (35, 618481), (71, 304885), (155, 139657), (217, 99755), (281, 77035), (355, 60977), (497, 43555), (1085, 19951), (1405, 15407), (1967, 11005), (2201, 9835), (2485, 8711)]