20897030

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3877}}^1$

素因数の和:3909

約数の個数: 48

約数和(自身を含む): 47745936

約数和(自身を除く): 26848906

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 3877, 5390, 7754, 19385, 27139, 38770, 42647, 54278, 85294, 135695, 189973, 213235, 271390, 298529, 379946, 426470, 597058, 949865, 1492645, 1899730, 2089703, 2985290, 4179406, 10448515, 20897030]

約数ペア:

[(1, 20897030), (2, 10448515), (5, 4179406), (7, 2985290), (10, 2089703), (11, 1899730), (14, 1492645), (22, 949865), (35, 597058), (49, 426470), (55, 379946), (70, 298529), (77, 271390), (98, 213235), (110, 189973), (154, 135695), (245, 85294), (385, 54278), (490, 42647), (539, 38770), (770, 27139), (1078, 19385), (2695, 7754), (3877, 5390)]