21103329

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 32094720

約数和(自身を除く): 10991391

約数列:

[1, 3, 13, 29, 39, 47, 87, 141, 377, 397, 611, 1131, 1191, 1363, 1833, 4089, 5161, 11513, 15483, 17719, 18659, 34539, 53157, 55977, 149669, 242567, 449007, 541111, 727701, 1623333, 7034443, 21103329]

約数ペア:

[(1, 21103329), (3, 7034443), (13, 1623333), (29, 727701), (39, 541111), (47, 449007), (87, 242567), (141, 149669), (377, 55977), (397, 53157), (611, 34539), (1131, 18659), (1191, 17719), (1363, 15483), (1833, 11513), (4089, 5161)]