161805620

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{63703}}^1$

素因数の和:63839

約数の個数: 24

約数和(自身を含む): 342472704

約数和(自身を除く): 180667084

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 63703, 127406, 254812, 318515, 637030, 1274060, 8090281, 16180562, 32361124, 40451405, 80902810, 161805620]

約数ペア:

[(1, 161805620), (2, 80902810), (4, 40451405), (5, 32361124), (10, 16180562), (20, 8090281), (127, 1274060), (254, 637030), (508, 318515), (635, 254812), (1270, 127406), (2540, 63703)]