21057578

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1\times {\mathrm{421}}^1$

素因数の和:793

約数の個数: 16

約数和(自身を含む): 32131080

約数和(自身を除く): 11073502

約数列:

[1, 2, 89, 178, 281, 421, 562, 842, 25009, 37469, 50018, 74938, 118301, 236602, 10528789, 21057578]

約数ペア:

[(1, 21057578), (2, 10528789), (89, 236602), (178, 118301), (281, 74938), (421, 50018), (562, 37469), (842, 25009)]