20901892

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{347}}^1$

素因数の和:436

約数の個数: 36

約数和(自身を含む): 41129424

約数和(自身を除く): 20227532

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 347, 407, 694, 814, 1369, 1388, 1628, 2738, 3817, 5476, 7634, 12839, 15059, 15268, 25678, 30118, 51356, 60236, 141229, 282458, 475043, 564916, 950086, 1900172, 5225473, 10450946, 20901892]

約数ペア:

[(1, 20901892), (2, 10450946), (4, 5225473), (11, 1900172), (22, 950086), (37, 564916), (44, 475043), (74, 282458), (148, 141229), (347, 60236), (407, 51356), (694, 30118), (814, 25678), (1369, 15268), (1388, 15059), (1628, 12839), (2738, 7634), (3817, 5476)]