21839785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3643}}^1$

素因数の和:3768

約数の個数: 16

約数和(自身を含む): 28860480

約数和(自身を除く): 7020695

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3643, 5995, 18215, 40073, 200365, 397087, 1985435, 4367957, 21839785]

約数ペア:

[(1, 21839785), (5, 4367957), (11, 1985435), (55, 397087), (109, 200365), (545, 40073), (1199, 18215), (3643, 5995)]