19542280

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1901}}^1$

素因数の和:2169

約数の個数: 32

約数和(自身を含む): 44164440

約数和(自身を除く): 24622160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 1901, 2056, 2570, 3802, 5140, 7604, 9505, 10280, 15208, 19010, 38020, 76040, 488557, 977114, 1954228, 2442785, 3908456, 4885570, 9771140, 19542280]

約数ペア:

[(1, 19542280), (2, 9771140), (4, 4885570), (5, 3908456), (8, 2442785), (10, 1954228), (20, 977114), (40, 488557), (257, 76040), (514, 38020), (1028, 19010), (1285, 15208), (1901, 10280), (2056, 9505), (2570, 7604), (3802, 5140)]