20178247684

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{391021}}^1$

素因数の和:391148

約数の個数: 48

約数和(自身を含む): 42918574720

約数和(自身を除く): 22740327036

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 97, 133, 194, 266, 388, 532, 679, 1358, 1843, 2716, 3686, 7372, 12901, 25802, 51604, 391021, 782042, 1564084, 2737147, 5474294, 7429399, 10948588, 14858798, 29717596, 37929037, 52005793, 75858074, 104011586, 151716148, 208023172, 265503259, 531006518, 720651703, 1062013036, 1441303406, 2882606812, 5044561921, 10089123842, 20178247684]

約数ペア:

[(1, 20178247684), (2, 10089123842), (4, 5044561921), (7, 2882606812), (14, 1441303406), (19, 1062013036), (28, 720651703), (38, 531006518), (76, 265503259), (97, 208023172), (133, 151716148), (194, 104011586), (266, 75858074), (388, 52005793), (532, 37929037), (679, 29717596), (1358, 14858798), (1843, 10948588), (2716, 7429399), (3686, 5474294), (7372, 2737147), (12901, 1564084), (25802, 782042), (51604, 391021)]