16518505

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 22118400

約数和(自身を除く): 5599895

約数列:

[1, 5, 19, 31, 71, 79, 95, 155, 355, 395, 589, 1349, 1501, 2201, 2449, 2945, 5609, 6745, 7505, 11005, 12245, 28045, 41819, 46531, 106571, 173879, 209095, 232655, 532855, 869395, 3303701, 16518505]

約数ペア:

[(1, 16518505), (5, 3303701), (19, 869395), (31, 532855), (71, 232655), (79, 209095), (95, 173879), (155, 106571), (355, 46531), (395, 41819), (589, 28045), (1349, 12245), (1501, 11005), (2201, 7505), (2449, 6745), (2945, 5609)]