20256489

素因数分解:

$3^2\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:147

約数の個数: 48

約数和(自身を含む): 34257600

約数和(自身を除く): 14001111

約数列:

[1, 3, 9, 11, 19, 33, 57, 89, 99, 121, 171, 209, 267, 363, 627, 801, 979, 1089, 1331, 1691, 1881, 2299, 2937, 3993, 5073, 6897, 8811, 10769, 11979, 15219, 18601, 20691, 25289, 32307, 55803, 75867, 96921, 118459, 167409, 204611, 227601, 355377, 613833, 1066131, 1841499, 2250721, 6752163, 20256489]

約数ペア:

[(1, 20256489), (3, 6752163), (9, 2250721), (11, 1841499), (19, 1066131), (33, 613833), (57, 355377), (89, 227601), (99, 204611), (121, 167409), (171, 118459), (209, 96921), (267, 75867), (363, 55803), (627, 32307), (801, 25289), (979, 20691), (1089, 18601), (1331, 15219), (1691, 11979), (1881, 10769), (2299, 8811), (2937, 6897), (3993, 5073)]