138889009

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:313

約数の個数: 32

約数和(自身を含む): 169632000

約数和(自身を除く): 30742991

約数列:

[1, 7, 37, 59, 61, 149, 259, 413, 427, 1043, 2183, 2257, 3599, 5513, 8791, 9089, 15281, 15799, 25193, 38591, 61537, 63623, 133163, 325267, 336293, 536251, 932141, 2276869, 2354051, 3753757, 19841287, 138889009]

約数ペア:

[(1, 138889009), (7, 19841287), (37, 3753757), (59, 2354051), (61, 2276869), (149, 932141), (259, 536251), (413, 336293), (427, 325267), (1043, 133163), (2183, 63623), (2257, 61537), (3599, 38591), (5513, 25193), (8791, 15799), (9089, 15281)]