21284865

素因数分解:

$3^2\times 5^1\times 7^4\times {\mathrm{197}}^1$

素因数の和:236

約数の個数: 60

約数和(自身を含む): 43258644

約数和(自身を除く): 21973779

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 197, 245, 315, 343, 441, 591, 735, 985, 1029, 1379, 1715, 1773, 2205, 2401, 2955, 3087, 4137, 5145, 6895, 7203, 8865, 9653, 12005, 12411, 15435, 20685, 21609, 28959, 36015, 48265, 62055, 67571, 86877, 108045, 144795, 202713, 337855, 434385, 472997, 608139, 1013565, 1418991, 2364985, 3040695, 4256973, 7094955, 21284865]

約数ペア:

[(1, 21284865), (3, 7094955), (5, 4256973), (7, 3040695), (9, 2364985), (15, 1418991), (21, 1013565), (35, 608139), (45, 472997), (49, 434385), (63, 337855), (105, 202713), (147, 144795), (197, 108045), (245, 86877), (315, 67571), (343, 62055), (441, 48265), (591, 36015), (735, 28959), (985, 21609), (1029, 20685), (1379, 15435), (1715, 12411), (1773, 12005), (2205, 9653), (2401, 8865), (2955, 7203), (3087, 6895), (4137, 5145)]