21157272

素因数分解:

$2^3\times 3^2\times {\mathrm{457}}^1\times {\mathrm{643}}^1$

素因数の和:1112

約数の個数: 48

約数和(自身を含む): 57515640

約数和(自身を除く): 36358368

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 457, 643, 914, 1286, 1371, 1828, 1929, 2572, 2742, 3656, 3858, 4113, 5144, 5484, 5787, 7716, 8226, 10968, 11574, 15432, 16452, 23148, 32904, 46296, 293851, 587702, 881553, 1175404, 1763106, 2350808, 2644659, 3526212, 5289318, 7052424, 10578636, 21157272]

約数ペア:

[(1, 21157272), (2, 10578636), (3, 7052424), (4, 5289318), (6, 3526212), (8, 2644659), (9, 2350808), (12, 1763106), (18, 1175404), (24, 881553), (36, 587702), (72, 293851), (457, 46296), (643, 32904), (914, 23148), (1286, 16452), (1371, 15432), (1828, 11574), (1929, 10968), (2572, 8226), (2742, 7716), (3656, 5787), (3858, 5484), (4113, 5144)]