21639994

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{1993}}^1$

素因数の和:2145

約数の個数: 16

約数和(自身を含む): 33379560

約数和(自身を除く): 11739566

約数列:

[1, 2, 61, 89, 122, 178, 1993, 3986, 5429, 10858, 121573, 177377, 243146, 354754, 10819997, 21639994]

約数ペア:

[(1, 21639994), (2, 10819997), (61, 354754), (89, 243146), (122, 177377), (178, 121573), (1993, 10858), (3986, 5429)]