21434140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11777}}^1$

素因数の和:11806

約数の個数: 48

約数和(自身を含む): 55403712

約数和(自身を除く): 33969572

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11777, 23554, 47108, 58885, 82439, 117770, 153101, 164878, 235540, 306202, 329756, 412195, 612404, 765505, 824390, 1071707, 1531010, 1648780, 2143414, 3062020, 4286828, 5358535, 10717070, 21434140]

約数ペア:

[(1, 21434140), (2, 10717070), (4, 5358535), (5, 4286828), (7, 3062020), (10, 2143414), (13, 1648780), (14, 1531010), (20, 1071707), (26, 824390), (28, 765505), (35, 612404), (52, 412195), (65, 329756), (70, 306202), (91, 235540), (130, 164878), (140, 153101), (182, 117770), (260, 82439), (364, 58885), (455, 47108), (910, 23554), (1820, 11777)]