20512139781

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1\times {\mathrm{64063}}^1$

素因数の和:64345

約数の個数: 32

約数和(自身を含む): 31816744960

約数和(自身を除く): 11304605179

約数列:

[1, 3, 7, 21, 79, 193, 237, 553, 579, 1351, 1659, 4053, 15247, 45741, 64063, 106729, 192189, 320187, 448441, 1345323, 5060977, 12364159, 15182931, 35426839, 37092477, 86549113, 106280517, 259647339, 976768561, 2930305683, 6837379927, 20512139781]

約数ペア:

[(1, 20512139781), (3, 6837379927), (7, 2930305683), (21, 976768561), (79, 259647339), (193, 106280517), (237, 86549113), (553, 37092477), (579, 35426839), (1351, 15182931), (1659, 12364159), (4053, 5060977), (15247, 1345323), (45741, 448441), (64063, 320187), (106729, 192189)]