1285221890

素因数分解:

$2^1\times 5^1\times {\mathrm{6571}}^1\times {\mathrm{19559}}^1$

素因数の和:26137

約数の個数: 16

約数和(自身を含む): 2313869760

約数和(自身を除く): 1028647870

約数列:

[1, 2, 5, 10, 6571, 13142, 19559, 32855, 39118, 65710, 97795, 195590, 128522189, 257044378, 642610945, 1285221890]

約数ペア:

[(1, 1285221890), (2, 642610945), (5, 257044378), (10, 128522189), (6571, 195590), (13142, 97795), (19559, 65710), (32855, 39118)]