21114795

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 39513600

約数和(自身を除く): 18398805

約数列:

[1, 3, 5, 13, 15, 19, 39, 41, 57, 65, 95, 123, 139, 195, 205, 247, 285, 417, 533, 615, 695, 741, 779, 1235, 1599, 1807, 2085, 2337, 2641, 2665, 3705, 3895, 5421, 5699, 7923, 7995, 9035, 10127, 11685, 13205, 17097, 27105, 28495, 30381, 34333, 39615, 50635, 74087, 85485, 102999, 108281, 151905, 171665, 222261, 324843, 370435, 514995, 541405, 1111305, 1407653, 1624215, 4222959, 7038265, 21114795]

約数ペア:

[(1, 21114795), (3, 7038265), (5, 4222959), (13, 1624215), (15, 1407653), (19, 1111305), (39, 541405), (41, 514995), (57, 370435), (65, 324843), (95, 222261), (123, 171665), (139, 151905), (195, 108281), (205, 102999), (247, 85485), (285, 74087), (417, 50635), (533, 39615), (615, 34333), (695, 30381), (741, 28495), (779, 27105), (1235, 17097), (1599, 13205), (1807, 11685), (2085, 10127), (2337, 9035), (2641, 7995), (2665, 7923), (3705, 5699), (3895, 5421)]