80804920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41227}}^1$

素因数の和:41252

約数の個数: 48

約数和(自身を含む): 211499640

約数和(自身を除く): 130694720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 41227, 82454, 164908, 206135, 288589, 329816, 412270, 577178, 824540, 1154356, 1442945, 1649080, 2020123, 2308712, 2885890, 4040246, 5771780, 8080492, 10100615, 11543560, 16160984, 20201230, 40402460, 80804920]

約数ペア:

[(1, 80804920), (2, 40402460), (4, 20201230), (5, 16160984), (7, 11543560), (8, 10100615), (10, 8080492), (14, 5771780), (20, 4040246), (28, 2885890), (35, 2308712), (40, 2020123), (49, 1649080), (56, 1442945), (70, 1154356), (98, 824540), (140, 577178), (196, 412270), (245, 329816), (280, 288589), (392, 206135), (490, 164908), (980, 82454), (1960, 41227)]