21327460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1259}}^1$

素因数の和:1297

約数の個数: 72

約数和(自身を含む): 56306880

約数和(自身を除く): 34979420

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1259, 1540, 1694, 2420, 2518, 3388, 4235, 5036, 6295, 8470, 8813, 12590, 13849, 16940, 17626, 25180, 27698, 35252, 44065, 55396, 69245, 88130, 96943, 138490, 152339, 176260, 193886, 276980, 304678, 387772, 484715, 609356, 761695, 969430, 1066373, 1523390, 1938860, 2132746, 3046780, 4265492, 5331865, 10663730, 21327460]

約数ペア:

[(1, 21327460), (2, 10663730), (4, 5331865), (5, 4265492), (7, 3046780), (10, 2132746), (11, 1938860), (14, 1523390), (20, 1066373), (22, 969430), (28, 761695), (35, 609356), (44, 484715), (55, 387772), (70, 304678), (77, 276980), (110, 193886), (121, 176260), (140, 152339), (154, 138490), (220, 96943), (242, 88130), (308, 69245), (385, 55396), (484, 44065), (605, 35252), (770, 27698), (847, 25180), (1210, 17626), (1259, 16940), (1540, 13849), (1694, 12590), (2420, 8813), (2518, 8470), (3388, 6295), (4235, 5036)]