21253978

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{27179}}^1$

素因数の和:27221

約数の個数: 16

約数和(自身を含む): 35225280

約数和(自身を除く): 13971302

約数列:

[1, 2, 17, 23, 34, 46, 391, 782, 27179, 54358, 462043, 625117, 924086, 1250234, 10626989, 21253978]

約数ペア:

[(1, 21253978), (2, 10626989), (17, 1250234), (23, 924086), (34, 625117), (46, 462043), (391, 54358), (782, 27179)]