21900008090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128823577}}^1$

素因数の和:128823601

約数の個数: 16

約数和(自身を含む): 41738839272

約数和(自身を除く): 19838831182

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128823577, 257647154, 644117885, 1288235770, 2190000809, 4380001618, 10950004045, 21900008090]

約数ペア:

[(1, 21900008090), (2, 10950004045), (5, 4380001618), (10, 2190000809), (17, 1288235770), (34, 644117885), (85, 257647154), (170, 128823577)]