21298557

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{853}}^1$

素因数の和:933

約数の個数: 32

約数和(自身を含む): 34433280

約数和(自身を除く): 13134723

約数列:

[1, 3, 7, 21, 29, 41, 87, 123, 203, 287, 609, 853, 861, 1189, 2559, 3567, 5971, 8323, 17913, 24737, 24969, 34973, 74211, 104919, 173159, 244811, 519477, 734433, 1014217, 3042651, 7099519, 21298557]

約数ペア:

[(1, 21298557), (3, 7099519), (7, 3042651), (21, 1014217), (29, 734433), (41, 519477), (87, 244811), (123, 173159), (203, 104919), (287, 74211), (609, 34973), (853, 24969), (861, 24737), (1189, 17913), (2559, 8323), (3567, 5971)]