15804940

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1229}}^1$

素因数の和:1881

約数の個数: 24

約数和(自身を含む): 33269040

約数和(自身を除く): 17464100

約数列:

[1, 2, 4, 5, 10, 20, 643, 1229, 1286, 2458, 2572, 3215, 4916, 6145, 6430, 12290, 12860, 24580, 790247, 1580494, 3160988, 3951235, 7902470, 15804940]

約数ペア:

[(1, 15804940), (2, 7902470), (4, 3951235), (5, 3160988), (10, 1580494), (20, 790247), (643, 24580), (1229, 12860), (1286, 12290), (2458, 6430), (2572, 6145), (3215, 4916)]