20118535

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:199

約数の個数: 24

約数和(自身を含む): 25738560

約数和(自身を除く): 5620025

約数列:

[1, 5, 31, 53, 79, 155, 265, 395, 961, 1643, 2449, 4187, 4805, 8215, 12245, 20935, 50933, 75919, 129797, 254665, 379595, 648985, 4023707, 20118535]

約数ペア:

[(1, 20118535), (5, 4023707), (31, 648985), (53, 379595), (79, 254665), (155, 129797), (265, 75919), (395, 50933), (961, 20935), (1643, 12245), (2449, 8215), (4187, 4805)]