321981569

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1\times {\mathrm{409}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 408871680

約数和(自身を除く): 86890111

約数列:

[1, 7, 13, 41, 91, 211, 287, 409, 533, 1477, 2743, 2863, 3731, 5317, 8651, 16769, 19201, 37219, 60557, 86299, 112463, 117383, 217997, 604093, 787241, 1121887, 1525979, 3538259, 7853209, 24767813, 45997367, 321981569]

約数ペア:

[(1, 321981569), (7, 45997367), (13, 24767813), (41, 7853209), (91, 3538259), (211, 1525979), (287, 1121887), (409, 787241), (533, 604093), (1477, 217997), (2743, 117383), (2863, 112463), (3731, 86299), (5317, 60557), (8651, 37219), (16769, 19201)]