21338870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1367}}^1$

素因数の和:1604

約数の個数: 32

約数和(自身を含む): 44126208

約数和(自身を除く): 22787338

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 223, 446, 1115, 1367, 1561, 2230, 2734, 3122, 6835, 7805, 9569, 13670, 15610, 19138, 47845, 95690, 304841, 609682, 1524205, 2133887, 3048410, 4267774, 10669435, 21338870]

約数ペア:

[(1, 21338870), (2, 10669435), (5, 4267774), (7, 3048410), (10, 2133887), (14, 1524205), (35, 609682), (70, 304841), (223, 95690), (446, 47845), (1115, 19138), (1367, 15610), (1561, 13670), (2230, 9569), (2734, 7805), (3122, 6835)]