31372971

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1289}}^1$

素因数の和:1379

約数の個数: 32

約数和(自身を含む): 51187200

約数和(自身を除く): 19814229

約数列:

[1, 3, 7, 19, 21, 57, 61, 133, 183, 399, 427, 1159, 1281, 1289, 3477, 3867, 8113, 9023, 24339, 24491, 27069, 73473, 78629, 171437, 235887, 514311, 550403, 1493951, 1651209, 4481853, 10457657, 31372971]

約数ペア:

[(1, 31372971), (3, 10457657), (7, 4481853), (19, 1651209), (21, 1493951), (57, 550403), (61, 514311), (133, 235887), (183, 171437), (399, 78629), (427, 73473), (1159, 27069), (1281, 24491), (1289, 24339), (3477, 9023), (3867, 8113)]