21997306

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{1181}}^1$

素因数の和:1389

約数の個数: 16

約数和(自身を含む): 33757920

約数和(自身を除く): 11760614

約数列:

[1, 2, 67, 134, 139, 278, 1181, 2362, 9313, 18626, 79127, 158254, 164159, 328318, 10998653, 21997306]

約数ペア:

[(1, 21997306), (2, 10998653), (67, 328318), (134, 164159), (139, 158254), (278, 79127), (1181, 18626), (2362, 9313)]