20349945

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{839}}^1$

素因数の和:875

約数の個数: 72

約数和(自身を含む): 44815680

約数和(自身を除く): 24465735

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 49, 55, 63, 77, 99, 105, 147, 165, 231, 245, 315, 385, 441, 495, 539, 693, 735, 839, 1155, 1617, 2205, 2517, 2695, 3465, 4195, 4851, 5873, 7551, 8085, 9229, 12585, 17619, 24255, 27687, 29365, 37755, 41111, 46145, 52857, 64603, 83061, 88095, 123333, 138435, 193809, 205555, 264285, 323015, 369999, 415305, 452221, 581427, 616665, 969045, 1356663, 1849995, 2261105, 2907135, 4069989, 6783315, 20349945]

約数ペア:

[(1, 20349945), (3, 6783315), (5, 4069989), (7, 2907135), (9, 2261105), (11, 1849995), (15, 1356663), (21, 969045), (33, 616665), (35, 581427), (45, 452221), (49, 415305), (55, 369999), (63, 323015), (77, 264285), (99, 205555), (105, 193809), (147, 138435), (165, 123333), (231, 88095), (245, 83061), (315, 64603), (385, 52857), (441, 46145), (495, 41111), (539, 37755), (693, 29365), (735, 27687), (839, 24255), (1155, 17619), (1617, 12585), (2205, 9229), (2517, 8085), (2695, 7551), (3465, 5873), (4195, 4851)]