20111210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{9907}}^1$

素因数の和:9950

約数の個数: 32

約数和(自身を含む): 42802560

約数和(自身を除く): 22691350

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 1015, 2030, 9907, 19814, 49535, 69349, 99070, 138698, 287303, 346745, 574606, 693490, 1436515, 2011121, 2873030, 4022242, 10055605, 20111210]

約数ペア:

[(1, 20111210), (2, 10055605), (5, 4022242), (7, 2873030), (10, 2011121), (14, 1436515), (29, 693490), (35, 574606), (58, 346745), (70, 287303), (145, 138698), (203, 99070), (290, 69349), (406, 49535), (1015, 19814), (2030, 9907)]