20294547

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{941}}^1$

素因数の和:1043

約数の個数: 32

約数和(自身を含む): 33761280

約数和(自身を除く): 13466733

約数列:

[1, 3, 7, 13, 21, 39, 79, 91, 237, 273, 553, 941, 1027, 1659, 2823, 3081, 6587, 7189, 12233, 19761, 21567, 36699, 74339, 85631, 223017, 256893, 520373, 966407, 1561119, 2899221, 6764849, 20294547]

約数ペア:

[(1, 20294547), (3, 6764849), (7, 2899221), (13, 1561119), (21, 966407), (39, 520373), (79, 256893), (91, 223017), (237, 85631), (273, 74339), (553, 36699), (941, 21567), (1027, 19761), (1659, 12233), (2823, 7189), (3081, 6587)]