20208650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:240

約数の個数: 96

約数和(自身を含む): 48746880

約数和(自身を除く): 28538230

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 29, 35, 50, 55, 58, 70, 77, 110, 145, 154, 175, 181, 203, 275, 290, 319, 350, 362, 385, 406, 550, 638, 725, 770, 905, 1015, 1267, 1450, 1595, 1810, 1925, 1991, 2030, 2233, 2534, 3190, 3850, 3982, 4466, 4525, 5075, 5249, 6335, 7975, 9050, 9955, 10150, 10498, 11165, 12670, 13937, 15950, 19910, 22330, 26245, 27874, 31675, 36743, 49775, 52490, 55825, 57739, 63350, 69685, 73486, 99550, 111650, 115478, 131225, 139370, 183715, 262450, 288695, 348425, 367430, 404173, 577390, 696850, 808346, 918575, 1443475, 1837150, 2020865, 2886950, 4041730, 10104325, 20208650]

約数ペア:

[(1, 20208650), (2, 10104325), (5, 4041730), (7, 2886950), (10, 2020865), (11, 1837150), (14, 1443475), (22, 918575), (25, 808346), (29, 696850), (35, 577390), (50, 404173), (55, 367430), (58, 348425), (70, 288695), (77, 262450), (110, 183715), (145, 139370), (154, 131225), (175, 115478), (181, 111650), (203, 99550), (275, 73486), (290, 69685), (319, 63350), (350, 57739), (362, 55825), (385, 52490), (406, 49775), (550, 36743), (638, 31675), (725, 27874), (770, 26245), (905, 22330), (1015, 19910), (1267, 15950), (1450, 13937), (1595, 12670), (1810, 11165), (1925, 10498), (1991, 10150), (2030, 9955), (2233, 9050), (2534, 7975), (3190, 6335), (3850, 5249), (3982, 5075), (4466, 4525)]