21989167985

素因数分解:

$5^1\times {\mathrm{127}}^1\times {\mathrm{883}}^1\times {\mathrm{39217}}^1$

素因数の和:40232

約数の個数: 16

約数和(自身を含む): 26625570816

約数和(自身を除く): 4636402831

約数列:

[1, 5, 127, 635, 883, 4415, 39217, 112141, 196085, 560705, 4980559, 24902795, 34628611, 173143055, 4397833597, 21989167985]

約数ペア:

[(1, 21989167985), (5, 4397833597), (127, 173143055), (635, 34628611), (883, 24902795), (4415, 4980559), (39217, 560705), (112141, 196085)]