21157410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{705247}}^1$

素因数の和:705257

約数の個数: 16

約数和(自身を含む): 50777856

約数和(自身を除く): 29620446

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 705247, 1410494, 2115741, 3526235, 4231482, 7052470, 10578705, 21157410]

約数ペア:

[(1, 21157410), (2, 10578705), (3, 7052470), (5, 4231482), (6, 3526235), (10, 2115741), (15, 1410494), (30, 705247)]