18556945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 7570415

約数列:

[1, 5, 11, 17, 55, 85, 89, 187, 223, 445, 935, 979, 1115, 1513, 2453, 3791, 4895, 7565, 12265, 16643, 18955, 19847, 41701, 83215, 99235, 208505, 218317, 337399, 1091585, 1686995, 3711389, 18556945]

約数ペア:

[(1, 18556945), (5, 3711389), (11, 1686995), (17, 1091585), (55, 337399), (85, 218317), (89, 208505), (187, 99235), (223, 83215), (445, 41701), (935, 19847), (979, 18955), (1115, 16643), (1513, 12265), (2453, 7565), (3791, 4895)]