81871998

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{25601}}^1$

素因数の和:25660

約数の個数: 32

約数和(自身を含む): 180647712

約数和(自身を除く): 98775714

約数列:

[1, 2, 3, 6, 13, 26, 39, 41, 78, 82, 123, 246, 533, 1066, 1599, 3198, 25601, 51202, 76803, 153606, 332813, 665626, 998439, 1049641, 1996878, 2099282, 3148923, 6297846, 13645333, 27290666, 40935999, 81871998]

約数ペア:

[(1, 81871998), (2, 40935999), (3, 27290666), (6, 13645333), (13, 6297846), (26, 3148923), (39, 2099282), (41, 1996878), (78, 1049641), (82, 998439), (123, 665626), (246, 332813), (533, 153606), (1066, 76803), (1599, 51202), (3198, 25601)]