18919828

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{317}}^1\times {\mathrm{347}}^1$

素因数の和:711

約数の個数: 24

約数和(自身を含む): 34084512

約数和(自身を除く): 15164684

約数列:

[1, 2, 4, 43, 86, 172, 317, 347, 634, 694, 1268, 1388, 13631, 14921, 27262, 29842, 54524, 59684, 109999, 219998, 439996, 4729957, 9459914, 18919828]

約数ペア:

[(1, 18919828), (2, 9459914), (4, 4729957), (43, 439996), (86, 219998), (172, 109999), (317, 59684), (347, 54524), (634, 29842), (694, 27262), (1268, 14921), (1388, 13631)]