21874307

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{887}}^1$

素因数の和:1178

約数の個数: 16

約数和(自身を含む): 27052032

約数和(自身を除く): 5177725

約数列:

[1, 7, 13, 91, 271, 887, 1897, 3523, 6209, 11531, 24661, 80717, 240377, 1682639, 3124901, 21874307]

約数ペア:

[(1, 21874307), (7, 3124901), (13, 1682639), (91, 240377), (271, 80717), (887, 24661), (1897, 11531), (3523, 6209)]