20803475

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 32783616

約数和(自身を除く): 11980141

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 101, 107, 175, 275, 385, 505, 535, 707, 749, 1111, 1177, 1925, 2525, 2675, 3535, 3745, 5555, 5885, 7777, 8239, 10807, 17675, 18725, 27775, 29425, 38885, 41195, 54035, 75649, 118877, 194425, 205975, 270175, 378245, 594385, 832139, 1891225, 2971925, 4160695, 20803475]

約数ペア:

[(1, 20803475), (5, 4160695), (7, 2971925), (11, 1891225), (25, 832139), (35, 594385), (55, 378245), (77, 270175), (101, 205975), (107, 194425), (175, 118877), (275, 75649), (385, 54035), (505, 41195), (535, 38885), (707, 29425), (749, 27775), (1111, 18725), (1177, 17675), (1925, 10807), (2525, 8239), (2675, 7777), (3535, 5885), (3745, 5555)]