19664505

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20809}}^1$

素因数の和:20830

約数の個数: 32

約数和(自身を含む): 39955200

約数和(自身を除く): 20290695

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20809, 62427, 104045, 145663, 187281, 312135, 436989, 561843, 728315, 936405, 1310967, 2184945, 2809215, 3932901, 6554835, 19664505]

約数ペア:

[(1, 19664505), (3, 6554835), (5, 3932901), (7, 2809215), (9, 2184945), (15, 1310967), (21, 936405), (27, 728315), (35, 561843), (45, 436989), (63, 312135), (105, 187281), (135, 145663), (189, 104045), (315, 62427), (945, 20809)]