21097295

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:1030

約数の個数: 16

約数和(自身を含む): 26085888

約数和(自身を除く): 4988593

約数列:

[1, 5, 67, 71, 335, 355, 887, 4435, 4757, 23785, 59429, 62977, 297145, 314885, 4219459, 21097295]

約数ペア:

[(1, 21097295), (5, 4219459), (67, 314885), (71, 297145), (335, 62977), (355, 59429), (887, 23785), (4435, 4757)]