21293415

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1103}}^1$

素因数の和:1141

約数の個数: 64

約数和(自身を含む): 44513280

約数和(自身を除く): 23219865

約数列:

[1, 3, 5, 9, 11, 13, 15, 27, 33, 39, 45, 55, 65, 99, 117, 135, 143, 165, 195, 297, 351, 429, 495, 585, 715, 1103, 1287, 1485, 1755, 2145, 3309, 3861, 5515, 6435, 9927, 12133, 14339, 16545, 19305, 29781, 36399, 43017, 49635, 60665, 71695, 109197, 129051, 148905, 157729, 181995, 215085, 327591, 387153, 473187, 545985, 645255, 788645, 1419561, 1637955, 1935765, 2365935, 4258683, 7097805, 21293415]

約数ペア:

[(1, 21293415), (3, 7097805), (5, 4258683), (9, 2365935), (11, 1935765), (13, 1637955), (15, 1419561), (27, 788645), (33, 645255), (39, 545985), (45, 473187), (55, 387153), (65, 327591), (99, 215085), (117, 181995), (135, 157729), (143, 148905), (165, 129051), (195, 109197), (297, 71695), (351, 60665), (429, 49635), (495, 43017), (585, 36399), (715, 29781), (1103, 19305), (1287, 16545), (1485, 14339), (1755, 12133), (2145, 9927), (3309, 6435), (3861, 5515)]