21675295

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{1511}}^1$

素因数の和:1686

約数の個数: 16

約数和(自身を含む): 27578880

約数和(自身を除く): 5903585

約数列:

[1, 5, 19, 95, 151, 755, 1511, 2869, 7555, 14345, 28709, 143545, 228161, 1140805, 4335059, 21675295]

約数ペア:

[(1, 21675295), (5, 4335059), (19, 1140805), (95, 228161), (151, 143545), (755, 28709), (1511, 14345), (2869, 7555)]