20644580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{877}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 47791296

約数和(自身を除く): 27146716

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 107, 110, 214, 220, 428, 535, 877, 1070, 1177, 1754, 2140, 2354, 3508, 4385, 4708, 5885, 8770, 9647, 11770, 17540, 19294, 23540, 38588, 48235, 93839, 96470, 187678, 192940, 375356, 469195, 938390, 1032229, 1876780, 2064458, 4128916, 5161145, 10322290, 20644580]

約数ペア:

[(1, 20644580), (2, 10322290), (4, 5161145), (5, 4128916), (10, 2064458), (11, 1876780), (20, 1032229), (22, 938390), (44, 469195), (55, 375356), (107, 192940), (110, 187678), (214, 96470), (220, 93839), (428, 48235), (535, 38588), (877, 23540), (1070, 19294), (1177, 17540), (1754, 11770), (2140, 9647), (2354, 8770), (3508, 5885), (4385, 4708)]