21407470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{305821}}^1$

素因数の和:305835

約数の個数: 16

約数和(自身を含む): 44038368

約数和(自身を除く): 22630898

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 305821, 611642, 1529105, 2140747, 3058210, 4281494, 10703735, 21407470]

約数ペア:

[(1, 21407470), (2, 10703735), (5, 4281494), (7, 3058210), (10, 2140747), (14, 1529105), (35, 611642), (70, 305821)]