20413645

素因数分解:

$5^1\times 7^3\times {\mathrm{11903}}^1$

素因数の和:11929

約数の個数: 16

約数和(自身を含む): 28569600

約数和(自身を除く): 8155955

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 11903, 59515, 83321, 416605, 583247, 2916235, 4082729, 20413645]

約数ペア:

[(1, 20413645), (5, 4082729), (7, 2916235), (35, 583247), (49, 416605), (245, 83321), (343, 59515), (1715, 11903)]