20407793

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{229}}^1\times {\mathrm{439}}^1$

素因数の和:704

約数の個数: 16

約数和(自身を含む): 24288000

約数和(自身を除く): 3880207

約数列:

[1, 7, 29, 203, 229, 439, 1603, 3073, 6641, 12731, 46487, 89117, 100531, 703717, 2915399, 20407793]

約数ペア:

[(1, 20407793), (7, 2915399), (29, 703717), (203, 100531), (229, 89117), (439, 46487), (1603, 12731), (3073, 6641)]