20536145

素因数分解:

$5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{769}}^1$

素因数の和:897

約数の個数: 24

約数和(自身を含む): 28967400

約数和(自身を除く): 8431255

約数列:

[1, 5, 7, 35, 49, 109, 245, 545, 763, 769, 3815, 3845, 5341, 5383, 26705, 26915, 37681, 83821, 188405, 419105, 586747, 2933735, 4107229, 20536145]

約数ペア:

[(1, 20536145), (5, 4107229), (7, 2933735), (35, 586747), (49, 419105), (109, 188405), (245, 83821), (545, 37681), (763, 26915), (769, 26705), (3815, 5383), (3845, 5341)]