196890981

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{153701}}^1$

素因数の和:153772

約数の個数: 16

約数和(自身を含む): 304944768

約数和(自身を除く): 108053787

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 153701, 461103, 1075907, 3227721, 9375761, 28127283, 65630327, 196890981]

約数ペア:

[(1, 196890981), (3, 65630327), (7, 28127283), (21, 9375761), (61, 3227721), (183, 1075907), (427, 461103), (1281, 153701)]