20800725

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1327}}^1$

素因数の和:1370

約数の個数: 48

約数和(自身を含む): 39521280

約数和(自身を除く): 18720555

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 165, 209, 275, 285, 475, 627, 825, 1045, 1327, 1425, 3135, 3981, 5225, 6635, 14597, 15675, 19905, 25213, 33175, 43791, 72985, 75639, 99525, 126065, 218955, 277343, 364925, 378195, 630325, 832029, 1094775, 1386715, 1890975, 4160145, 6933575, 20800725]

約数ペア:

[(1, 20800725), (3, 6933575), (5, 4160145), (11, 1890975), (15, 1386715), (19, 1094775), (25, 832029), (33, 630325), (55, 378195), (57, 364925), (75, 277343), (95, 218955), (165, 126065), (209, 99525), (275, 75639), (285, 72985), (475, 43791), (627, 33175), (825, 25213), (1045, 19905), (1327, 15675), (1425, 14597), (3135, 6635), (3981, 5225)]