19863308

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{641}}^1$

素因数の和:833

約数の個数: 24

約数和(自身を含む): 35664384

約数和(自身を除く): 15801076

約数列:

[1, 2, 4, 61, 122, 127, 244, 254, 508, 641, 1282, 2564, 7747, 15494, 30988, 39101, 78202, 81407, 156404, 162814, 325628, 4965827, 9931654, 19863308]

約数ペア:

[(1, 19863308), (2, 9931654), (4, 4965827), (61, 325628), (122, 162814), (127, 156404), (244, 81407), (254, 78202), (508, 39101), (641, 30988), (1282, 15494), (2564, 7747)]