20688045

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{4021}}^1$

素因数の和:4050

約数の個数: 32

約数和(自身を含む): 38611200

約数和(自身を除く): 17923155

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 4021, 5145, 12063, 20105, 28147, 60315, 84441, 140735, 197029, 422205, 591087, 985145, 1379203, 2955435, 4137609, 6896015, 20688045]

約数ペア:

[(1, 20688045), (3, 6896015), (5, 4137609), (7, 2955435), (15, 1379203), (21, 985145), (35, 591087), (49, 422205), (105, 197029), (147, 140735), (245, 84441), (343, 60315), (735, 28147), (1029, 20105), (1715, 12063), (4021, 5145)]