21881090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:363

約数の個数: 64

約数和(自身を含む): 49690368

約数和(自身を除く): 27809278

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 157, 181, 314, 362, 385, 770, 785, 905, 1099, 1267, 1570, 1727, 1810, 1991, 2198, 2534, 3454, 3982, 5495, 6335, 8635, 9955, 10990, 12089, 12670, 13937, 17270, 19910, 24178, 27874, 28417, 56834, 60445, 69685, 120890, 139370, 142085, 198919, 284170, 312587, 397838, 625174, 994595, 1562935, 1989190, 2188109, 3125870, 4376218, 10940545, 21881090]

約数ペア:

[(1, 21881090), (2, 10940545), (5, 4376218), (7, 3125870), (10, 2188109), (11, 1989190), (14, 1562935), (22, 994595), (35, 625174), (55, 397838), (70, 312587), (77, 284170), (110, 198919), (154, 142085), (157, 139370), (181, 120890), (314, 69685), (362, 60445), (385, 56834), (770, 28417), (785, 27874), (905, 24178), (1099, 19910), (1267, 17270), (1570, 13937), (1727, 12670), (1810, 12089), (1991, 10990), (2198, 9955), (2534, 8635), (3454, 6335), (3982, 5495)]