206917220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{1109}}^1$

素因数の和:1628

約数の個数: 48

約数和(自身を含む): 458740800

約数和(自身を除く): 251823580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 491, 982, 1109, 1964, 2218, 2455, 4436, 4910, 5545, 9329, 9820, 11090, 18658, 21071, 22180, 37316, 42142, 46645, 84284, 93290, 105355, 186580, 210710, 421420, 544519, 1089038, 2178076, 2722595, 5445190, 10345861, 10890380, 20691722, 41383444, 51729305, 103458610, 206917220]

約数ペア:

[(1, 206917220), (2, 103458610), (4, 51729305), (5, 41383444), (10, 20691722), (19, 10890380), (20, 10345861), (38, 5445190), (76, 2722595), (95, 2178076), (190, 1089038), (380, 544519), (491, 421420), (982, 210710), (1109, 186580), (1964, 105355), (2218, 93290), (2455, 84284), (4436, 46645), (4910, 42142), (5545, 37316), (9329, 22180), (9820, 21071), (11090, 18658)]