20918145

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{3863}}^1$

素因数の和:3909

約数の個数: 24

約数和(自身を含む): 35332416

約数和(自身を除く): 14414271

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 361, 1083, 1805, 3863, 5415, 11589, 19315, 57945, 73397, 220191, 366985, 1100955, 1394543, 4183629, 6972715, 20918145]

約数ペア:

[(1, 20918145), (3, 6972715), (5, 4183629), (15, 1394543), (19, 1100955), (57, 366985), (95, 220191), (285, 73397), (361, 57945), (1083, 19315), (1805, 11589), (3863, 5415)]