20585145

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{4001}}^1$

素因数の和:4030

約数の個数: 32

約数和(自身を含む): 38419200

約数和(自身を除く): 17834055

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 4001, 5145, 12003, 20005, 28007, 60015, 84021, 140035, 196049, 420105, 588147, 980245, 1372343, 2940735, 4117029, 6861715, 20585145]

約数ペア:

[(1, 20585145), (3, 6861715), (5, 4117029), (7, 2940735), (15, 1372343), (21, 980245), (35, 588147), (49, 420105), (105, 196049), (147, 140035), (245, 84021), (343, 60015), (735, 28007), (1029, 20005), (1715, 12003), (4001, 5145)]