21285024145

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{827}}^1\times {\mathrm{66851}}^1$

素因数の和:67701

約数の個数: 32

約数和(自身を含む): 31883590656

約数和(自身を除く): 10598566511

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 827, 4135, 5789, 9097, 28945, 45485, 63679, 66851, 318395, 334255, 467957, 735361, 2339785, 3676805, 5147527, 25737635, 55285777, 276428885, 387000439, 608143547, 1935002195, 3040717735, 4257004829, 21285024145]

約数ペア:

[(1, 21285024145), (5, 4257004829), (7, 3040717735), (11, 1935002195), (35, 608143547), (55, 387000439), (77, 276428885), (385, 55285777), (827, 25737635), (4135, 5147527), (5789, 3676805), (9097, 2339785), (28945, 735361), (45485, 467957), (63679, 334255), (66851, 318395)]