21486776

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157991}}^1$

素因数の和:158014

約数の個数: 16

約数和(自身を含む): 42657840

約数和(自身を除く): 21171064

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157991, 315982, 631964, 1263928, 2685847, 5371694, 10743388, 21486776]

約数ペア:

[(1, 21486776), (2, 10743388), (4, 5371694), (8, 2685847), (17, 1263928), (34, 631964), (68, 315982), (136, 157991)]