20405415

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{769}}^1$

素因数の和:867

約数の個数: 32

約数和(自身を含む): 34372800

約数和(自身を除く): 13967385

約数列:

[1, 3, 5, 15, 29, 61, 87, 145, 183, 305, 435, 769, 915, 1769, 2307, 3845, 5307, 8845, 11535, 22301, 26535, 46909, 66903, 111505, 140727, 234545, 334515, 703635, 1360361, 4081083, 6801805, 20405415]

約数ペア:

[(1, 20405415), (3, 6801805), (5, 4081083), (15, 1360361), (29, 703635), (61, 334515), (87, 234545), (145, 140727), (183, 111505), (305, 66903), (435, 46909), (769, 26535), (915, 22301), (1769, 11535), (2307, 8845), (3845, 5307)]