1286551

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:222

約数の個数: 16

約数和(自身を含む): 1571328

約数和(自身を除く): 284777

約数列:

[1, 7, 23, 61, 131, 161, 427, 917, 1403, 3013, 7991, 9821, 21091, 55937, 183793, 1286551]

約数ペア:

[(1, 1286551), (7, 183793), (23, 55937), (61, 21091), (131, 9821), (161, 7991), (427, 3013), (917, 1403)]