20951685

素因数分解:

$3^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1051}}^1$

素因数の和:1505

約数の個数: 24

約数和(自身を含む): 36432864

約数和(自身を除く): 15481179

約数列:

[1, 3, 5, 9, 15, 45, 443, 1051, 1329, 2215, 3153, 3987, 5255, 6645, 9459, 15765, 19935, 47295, 465593, 1396779, 2327965, 4190337, 6983895, 20951685]

約数ペア:

[(1, 20951685), (3, 6983895), (5, 4190337), (9, 2327965), (15, 1396779), (45, 465593), (443, 47295), (1051, 19935), (1329, 15765), (2215, 9459), (3153, 6645), (3987, 5255)]