261120440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:565

約数の個数: 128

約数和(自身を含む): 705024000

約数和(自身を除く): 443903560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 67, 70, 124, 134, 140, 155, 217, 248, 268, 280, 310, 335, 434, 449, 469, 536, 620, 670, 868, 898, 938, 1085, 1240, 1340, 1736, 1796, 1876, 2077, 2170, 2245, 2345, 2680, 3143, 3592, 3752, 4154, 4340, 4490, 4690, 6286, 8308, 8680, 8980, 9380, 10385, 12572, 13919, 14539, 15715, 16616, 17960, 18760, 20770, 25144, 27838, 29078, 30083, 31430, 41540, 55676, 58156, 60166, 62860, 69595, 72695, 83080, 97433, 111352, 116312, 120332, 125720, 139190, 145390, 150415, 194866, 210581, 240664, 278380, 290780, 300830, 389732, 421162, 487165, 556760, 581560, 601660, 779464, 842324, 932573, 974330, 1052905, 1203320, 1684648, 1865146, 1948660, 2105810, 3730292, 3897320, 4211620, 4662865, 6528011, 7460584, 8423240, 9325730, 13056022, 18651460, 26112044, 32640055, 37302920, 52224088, 65280110, 130560220, 261120440]

約数ペア:

[(1, 261120440), (2, 130560220), (4, 65280110), (5, 52224088), (7, 37302920), (8, 32640055), (10, 26112044), (14, 18651460), (20, 13056022), (28, 9325730), (31, 8423240), (35, 7460584), (40, 6528011), (56, 4662865), (62, 4211620), (67, 3897320), (70, 3730292), (124, 2105810), (134, 1948660), (140, 1865146), (155, 1684648), (217, 1203320), (248, 1052905), (268, 974330), (280, 932573), (310, 842324), (335, 779464), (434, 601660), (449, 581560), (469, 556760), (536, 487165), (620, 421162), (670, 389732), (868, 300830), (898, 290780), (938, 278380), (1085, 240664), (1240, 210581), (1340, 194866), (1736, 150415), (1796, 145390), (1876, 139190), (2077, 125720), (2170, 120332), (2245, 116312), (2345, 111352), (2680, 97433), (3143, 83080), (3592, 72695), (3752, 69595), (4154, 62860), (4340, 60166), (4490, 58156), (4690, 55676), (6286, 41540), (8308, 31430), (8680, 30083), (8980, 29078), (9380, 27838), (10385, 25144), (12572, 20770), (13919, 18760), (14539, 17960), (15715, 16616)]