20409075

素因数分解:

$3^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{1487}}^1$

素因数の和:1564

約数の個数: 36

約数和(自身を含む): 37179168

約数和(自身を除く): 16770093

約数列:

[1, 3, 5, 9, 15, 25, 45, 61, 75, 183, 225, 305, 549, 915, 1487, 1525, 2745, 4461, 4575, 7435, 13383, 13725, 22305, 37175, 66915, 90707, 111525, 272121, 334575, 453535, 816363, 1360605, 2267675, 4081815, 6803025, 20409075]

約数ペア:

[(1, 20409075), (3, 6803025), (5, 4081815), (9, 2267675), (15, 1360605), (25, 816363), (45, 453535), (61, 334575), (75, 272121), (183, 111525), (225, 90707), (305, 66915), (549, 37175), (915, 22305), (1487, 13725), (1525, 13383), (2745, 7435), (4461, 4575)]