21173912

素因数分解:

$2^3\times {\mathrm{281}}^1\times {\mathrm{9419}}^1$

素因数の和:9706

約数の個数: 16

約数和(自身を含む): 39846600

約数和(自身を除く): 18672688

約数列:

[1, 2, 4, 8, 281, 562, 1124, 2248, 9419, 18838, 37676, 75352, 2646739, 5293478, 10586956, 21173912]

約数ペア:

[(1, 21173912), (2, 10586956), (4, 5293478), (8, 2646739), (281, 75352), (562, 37676), (1124, 18838), (2248, 9419)]