20325520

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8761}}^1$

素因数の和:8803

約数の個数: 40

約数和(自身を含む): 48891960

約数和(自身を除く): 28566440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8761, 17522, 35044, 43805, 70088, 87610, 140176, 175220, 254069, 350440, 508138, 700880, 1016276, 1270345, 2032552, 2540690, 4065104, 5081380, 10162760, 20325520]

約数ペア:

[(1, 20325520), (2, 10162760), (4, 5081380), (5, 4065104), (8, 2540690), (10, 2032552), (16, 1270345), (20, 1016276), (29, 700880), (40, 508138), (58, 350440), (80, 254069), (116, 175220), (145, 140176), (232, 87610), (290, 70088), (464, 43805), (580, 35044), (1160, 17522), (2320, 8761)]