20786535

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{857}}^1$

素因数の和:893

約数の個数: 72

約数和(自身を含む): 45776016

約数和(自身を除く): 24989481

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, 857, 1155, 1617, 2205, 2571, 2695, 3465, 4285, 4851, 5999, 7713, 8085, 9427, 12855, 17997, 24255, 28281, 29995, 38565, 41993, 47135, 53991, 65989, 84843, 89985, 125979, 141405, 197967, 209965, 269955, 329945, 377937, 424215, 461923, 593901, 629895, 989835, 1385769, 1889685, 2309615, 2969505, 4157307, 6928845, 20786535]

約数ペア:

[(1, 20786535), (3, 6928845), (5, 4157307), (7, 2969505), (9, 2309615), (11, 1889685), (15, 1385769), (21, 989835), (33, 629895), (35, 593901), (45, 461923), (49, 424215), (55, 377937), (63, 329945), (77, 269955), (99, 209965), (105, 197967), (147, 141405), (165, 125979), (231, 89985), (245, 84843), (315, 65989), (385, 53991), (441, 47135), (495, 41993), (539, 38565), (693, 29995), (735, 28281), (857, 24255), (1155, 17997), (1617, 12855), (2205, 9427), (2571, 8085), (2695, 7713), (3465, 5999), (4285, 4851)]