21393231

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{383}}^1\times {\mathrm{433}}^1$

素因数の和:862

約数の個数: 16

約数和(自身を含む): 29331456

約数和(自身を除く): 7938225

約数列:

[1, 3, 43, 129, 383, 433, 1149, 1299, 16469, 18619, 49407, 55857, 165839, 497517, 7131077, 21393231]

約数ペア:

[(1, 21393231), (3, 7131077), (43, 497517), (129, 165839), (383, 55857), (433, 49407), (1149, 18619), (1299, 16469)]