21805406

素因数分解:

$2^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{16057}}^1$

素因数の和:16163

約数の個数: 16

約数和(自身を含む): 37768416

約数和(自身を除く): 15963010

約数列:

[1, 2, 7, 14, 97, 194, 679, 1358, 16057, 32114, 112399, 224798, 1557529, 3115058, 10902703, 21805406]

約数ペア:

[(1, 21805406), (2, 10902703), (7, 3115058), (14, 1557529), (97, 224798), (194, 112399), (679, 32114), (1358, 16057)]