16786940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 36953280

約数和(自身を除く): 20166340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 103, 116, 145, 206, 281, 290, 412, 515, 562, 580, 1030, 1124, 1405, 2060, 2810, 2987, 5620, 5974, 8149, 11948, 14935, 16298, 28943, 29870, 32596, 40745, 57886, 59740, 81490, 115772, 144715, 162980, 289430, 578860, 839347, 1678694, 3357388, 4196735, 8393470, 16786940]

約数ペア:

[(1, 16786940), (2, 8393470), (4, 4196735), (5, 3357388), (10, 1678694), (20, 839347), (29, 578860), (58, 289430), (103, 162980), (116, 144715), (145, 115772), (206, 81490), (281, 59740), (290, 57886), (412, 40745), (515, 32596), (562, 29870), (580, 28943), (1030, 16298), (1124, 14935), (1405, 11948), (2060, 8149), (2810, 5974), (2987, 5620)]