20440105

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4391}}^1$

素因数の和:4429

約数の個数: 24

約数和(自身を含む): 30041280

約数和(自身を除く): 9601175

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 931, 4391, 4655, 21955, 30737, 83429, 153685, 215159, 417145, 584003, 1075795, 2920015, 4088021, 20440105]

約数ペア:

[(1, 20440105), (5, 4088021), (7, 2920015), (19, 1075795), (35, 584003), (49, 417145), (95, 215159), (133, 153685), (245, 83429), (665, 30737), (931, 21955), (4391, 4655)]