16281999

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 25482240

約数和(自身を除く): 9200241

約数列:

[1, 3, 9, 23, 27, 69, 157, 167, 207, 471, 501, 621, 1413, 1503, 3611, 3841, 4239, 4509, 10833, 11523, 26219, 32499, 34569, 78657, 97497, 103707, 235971, 603037, 707913, 1809111, 5427333, 16281999]

約数ペア:

[(1, 16281999), (3, 5427333), (9, 1809111), (23, 707913), (27, 603037), (69, 235971), (157, 103707), (167, 97497), (207, 78657), (471, 34569), (501, 32499), (621, 26219), (1413, 11523), (1503, 10833), (3611, 4509), (3841, 4239)]