81243620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{213799}}^1$

素因数の和:213827

約数の個数: 24

約数和(自身を含む): 179592000

約数和(自身を除く): 98348380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 213799, 427598, 855196, 1068995, 2137990, 4062181, 4275980, 8124362, 16248724, 20310905, 40621810, 81243620]

約数ペア:

[(1, 81243620), (2, 40621810), (4, 20310905), (5, 16248724), (10, 8124362), (19, 4275980), (20, 4062181), (38, 2137990), (76, 1068995), (95, 855196), (190, 427598), (380, 213799)]