20265615

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 37908000

約数和(自身を除く): 17642385

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 59, 85, 153, 177, 255, 295, 449, 531, 765, 885, 1003, 1347, 2245, 2655, 3009, 4041, 5015, 6735, 7633, 9027, 15045, 20205, 22899, 26491, 38165, 45135, 68697, 79473, 114495, 132455, 238419, 343485, 397365, 450347, 1192095, 1351041, 2251735, 4053123, 6755205, 20265615]

約数ペア:

[(1, 20265615), (3, 6755205), (5, 4053123), (9, 2251735), (15, 1351041), (17, 1192095), (45, 450347), (51, 397365), (59, 343485), (85, 238419), (153, 132455), (177, 114495), (255, 79473), (295, 68697), (449, 45135), (531, 38165), (765, 26491), (885, 22899), (1003, 20205), (1347, 15045), (2245, 9027), (2655, 7633), (3009, 6735), (4041, 5015)]