21815930

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{709}}^1$

素因数の和:914

約数の個数: 32

約数和(自身を含む): 41867280

約数和(自身を除く): 20051350

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 181, 362, 709, 905, 1418, 1810, 3077, 3545, 6154, 7090, 12053, 15385, 24106, 30770, 60265, 120530, 128329, 256658, 641645, 1283290, 2181593, 4363186, 10907965, 21815930]

約数ペア:

[(1, 21815930), (2, 10907965), (5, 4363186), (10, 2181593), (17, 1283290), (34, 641645), (85, 256658), (170, 128329), (181, 120530), (362, 60265), (709, 30770), (905, 24106), (1418, 15385), (1810, 12053), (3077, 7090), (3545, 6154)]