15999995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 22498560

約数和(自身を除く): 6498565

約数列:

[1, 5, 11, 19, 55, 61, 95, 209, 251, 305, 671, 1045, 1159, 1255, 2761, 3355, 4769, 5795, 12749, 13805, 15311, 23845, 52459, 63745, 76555, 168421, 262295, 290909, 842105, 1454545, 3199999, 15999995]

約数ペア:

[(1, 15999995), (5, 3199999), (11, 1454545), (19, 842105), (55, 290909), (61, 262295), (95, 168421), (209, 76555), (251, 63745), (305, 52459), (671, 23845), (1045, 15311), (1159, 13805), (1255, 12749), (2761, 5795), (3355, 4769)]