28072660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18229}}^1$

素因数の和:18256

約数の個数: 48

約数和(自身を含む): 73503360

約数和(自身を除く): 45430700

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18229, 36458, 72916, 91145, 127603, 182290, 200519, 255206, 364580, 401038, 510412, 638015, 802076, 1002595, 1276030, 1403633, 2005190, 2552060, 2807266, 4010380, 5614532, 7018165, 14036330, 28072660]

約数ペア:

[(1, 28072660), (2, 14036330), (4, 7018165), (5, 5614532), (7, 4010380), (10, 2807266), (11, 2552060), (14, 2005190), (20, 1403633), (22, 1276030), (28, 1002595), (35, 802076), (44, 638015), (55, 510412), (70, 401038), (77, 364580), (110, 255206), (140, 200519), (154, 182290), (220, 127603), (308, 91145), (385, 72916), (770, 36458), (1540, 18229)]