20803545

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{313}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 41538432

約数和(自身を除く): 20734887

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 211, 313, 315, 633, 939, 1055, 1477, 1565, 1899, 2191, 2817, 3165, 4431, 4695, 6573, 7385, 9495, 10955, 13293, 14085, 19719, 22155, 32865, 66043, 66465, 98595, 198129, 330215, 462301, 594387, 990645, 1386903, 2311505, 2971935, 4160709, 6934515, 20803545]

約数ペア:

[(1, 20803545), (3, 6934515), (5, 4160709), (7, 2971935), (9, 2311505), (15, 1386903), (21, 990645), (35, 594387), (45, 462301), (63, 330215), (105, 198129), (211, 98595), (313, 66465), (315, 66043), (633, 32865), (939, 22155), (1055, 19719), (1477, 14085), (1565, 13293), (1899, 10955), (2191, 9495), (2817, 7385), (3165, 6573), (4431, 4695)]