21452210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{3511}}^1$

素因数の和:3578

約数の個数: 32

約数和(自身を含む): 42481152

約数和(自身を除く): 21028942

約数列:

[1, 2, 5, 10, 13, 26, 47, 65, 94, 130, 235, 470, 611, 1222, 3055, 3511, 6110, 7022, 17555, 35110, 45643, 91286, 165017, 228215, 330034, 456430, 825085, 1650170, 2145221, 4290442, 10726105, 21452210]

約数ペア:

[(1, 21452210), (2, 10726105), (5, 4290442), (10, 2145221), (13, 1650170), (26, 825085), (47, 456430), (65, 330034), (94, 228215), (130, 165017), (235, 91286), (470, 45643), (611, 35110), (1222, 17555), (3055, 7022), (3511, 6110)]