21457730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{967}}^1$

素因数の和:1298

約数の個数: 32

約数和(自身を含む): 44326656

約数和(自身を除く): 22868926

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 317, 634, 967, 1585, 1934, 2219, 3170, 4438, 4835, 6769, 9670, 11095, 13538, 22190, 33845, 67690, 306539, 613078, 1532695, 2145773, 3065390, 4291546, 10728865, 21457730]

約数ペア:

[(1, 21457730), (2, 10728865), (5, 4291546), (7, 3065390), (10, 2145773), (14, 1532695), (35, 613078), (70, 306539), (317, 67690), (634, 33845), (967, 22190), (1585, 13538), (1934, 11095), (2219, 9670), (3170, 6769), (4438, 4835)]