20763945

素因数分解:

$3^4\times 5^1\times {\mathrm{167}}^1\times {\mathrm{307}}^1$

素因数の和:491

約数の個数: 40

約数和(自身を含む): 37566144

約数和(自身を除く): 16802199

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 167, 307, 405, 501, 835, 921, 1503, 1535, 2505, 2763, 4509, 4605, 7515, 8289, 13527, 13815, 22545, 24867, 41445, 51269, 67635, 124335, 153807, 256345, 461421, 769035, 1384263, 2307105, 4152789, 6921315, 20763945]

約数ペア:

[(1, 20763945), (3, 6921315), (5, 4152789), (9, 2307105), (15, 1384263), (27, 769035), (45, 461421), (81, 256345), (135, 153807), (167, 124335), (307, 67635), (405, 51269), (501, 41445), (835, 24867), (921, 22545), (1503, 13815), (1535, 13527), (2505, 8289), (2763, 7515), (4509, 4605)]