19880660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{227}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 23785900

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 151, 227, 290, 302, 454, 580, 604, 755, 908, 1135, 1510, 2270, 3020, 4379, 4540, 6583, 8758, 13166, 17516, 21895, 26332, 32915, 34277, 43790, 65830, 68554, 87580, 131660, 137108, 171385, 342770, 685540, 994033, 1988066, 3976132, 4970165, 9940330, 19880660]

約数ペア:

[(1, 19880660), (2, 9940330), (4, 4970165), (5, 3976132), (10, 1988066), (20, 994033), (29, 685540), (58, 342770), (116, 171385), (145, 137108), (151, 131660), (227, 87580), (290, 68554), (302, 65830), (454, 43790), (580, 34277), (604, 32915), (755, 26332), (908, 21895), (1135, 17516), (1510, 13166), (2270, 8758), (3020, 6583), (4379, 4540)]