20516685

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5281}}^1$

素因数の和:5333

約数の個数: 32

約数和(自身を含む): 38537472

約数和(自身を除く): 18020787

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295, 3885, 5281, 15843, 26405, 36967, 79215, 110901, 184835, 195397, 554505, 586191, 976985, 1367779, 2930955, 4103337, 6838895, 20516685]

約数ペア:

[(1, 20516685), (3, 6838895), (5, 4103337), (7, 2930955), (15, 1367779), (21, 976985), (35, 586191), (37, 554505), (105, 195397), (111, 184835), (185, 110901), (259, 79215), (555, 36967), (777, 26405), (1295, 15843), (3885, 5281)]