21941985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6619}}^1$

素因数の和:6657

約数の個数: 32

約数和(自身を含む): 40037760

約数和(自身を除く): 18095775

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 6619, 19857, 33095, 86047, 99285, 112523, 258141, 337569, 430235, 562615, 1290705, 1462799, 1687845, 4388397, 7313995, 21941985]

約数ペア:

[(1, 21941985), (3, 7313995), (5, 4388397), (13, 1687845), (15, 1462799), (17, 1290705), (39, 562615), (51, 430235), (65, 337569), (85, 258141), (195, 112523), (221, 99285), (255, 86047), (663, 33095), (1105, 19857), (3315, 6619)]