21898210

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128813}}^1$

素因数の和:128837

約数の個数: 16

約数和(自身を含む): 41735736

約数和(自身を除く): 19837526

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128813, 257626, 644065, 1288130, 2189821, 4379642, 10949105, 21898210]

約数ペア:

[(1, 21898210), (2, 10949105), (5, 4379642), (10, 2189821), (17, 1288130), (34, 644065), (85, 257626), (170, 128813)]