81799180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{215261}}^1$

素因数の和:215289

約数の個数: 24

約数和(自身を含む): 180820080

約数和(自身を除く): 99020900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 215261, 430522, 861044, 1076305, 2152610, 4089959, 4305220, 8179918, 16359836, 20449795, 40899590, 81799180]

約数ペア:

[(1, 81799180), (2, 40899590), (4, 20449795), (5, 16359836), (10, 8179918), (19, 4305220), (20, 4089959), (38, 2152610), (76, 1076305), (95, 861044), (190, 430522), (380, 215261)]