876804020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{121441}}^1$

素因数の和:121488

約数の個数: 36

約数和(自身を含む): 1943314884

約数和(自身を除く): 1066510864

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 121441, 242882, 485764, 607205, 1214410, 2307379, 2428820, 4614758, 9229516, 11536895, 23073790, 43840201, 46147580, 87680402, 175360804, 219201005, 438402010, 876804020]

約数ペア:

[(1, 876804020), (2, 438402010), (4, 219201005), (5, 175360804), (10, 87680402), (19, 46147580), (20, 43840201), (38, 23073790), (76, 11536895), (95, 9229516), (190, 4614758), (361, 2428820), (380, 2307379), (722, 1214410), (1444, 607205), (1805, 485764), (3610, 242882), (7220, 121441)]