21350115

素因数分解:

$3^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{947}}^1$

素因数の和:1128

約数の個数: 32

約数和(自身を含む): 38223360

約数和(自身を除く): 16873245

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 167, 501, 835, 947, 1503, 2505, 2841, 4509, 4735, 7515, 8523, 14205, 22545, 25569, 42615, 127845, 158149, 474447, 790745, 1423341, 2372235, 4270023, 7116705, 21350115]

約数ペア:

[(1, 21350115), (3, 7116705), (5, 4270023), (9, 2372235), (15, 1423341), (27, 790745), (45, 474447), (135, 158149), (167, 127845), (501, 42615), (835, 25569), (947, 22545), (1503, 14205), (2505, 8523), (2841, 7515), (4509, 4735)]