20407245

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{22303}}^1$

素因数の和:22372

約数の個数: 16

約数和(自身を含む): 33188352

約数和(自身を除く): 12781107

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 22303, 66909, 111515, 334545, 1360483, 4081449, 6802415, 20407245]

約数ペア:

[(1, 20407245), (3, 6802415), (5, 4081449), (15, 1360483), (61, 334545), (183, 111515), (305, 66909), (915, 22303)]