20984930

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5813}}^1$

素因数の和:5858

約数の個数: 24

約数和(自身を含む): 39872412

約数和(自身を除く): 18887482

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 361, 722, 1805, 3610, 5813, 11626, 29065, 58130, 110447, 220894, 552235, 1104470, 2098493, 4196986, 10492465, 20984930]

約数ペア:

[(1, 20984930), (2, 10492465), (5, 4196986), (10, 2098493), (19, 1104470), (38, 552235), (95, 220894), (190, 110447), (361, 58130), (722, 29065), (1805, 11626), (3610, 5813)]