820001157255

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{19572769}}^1$

素因数の和:19572813

約数の個数: 72

約数和(自身を含む): 1740410708400

約数和(自身を除く): 920409551145

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 49, 57, 63, 95, 105, 133, 147, 171, 245, 285, 315, 399, 441, 665, 735, 855, 931, 1197, 1995, 2205, 2793, 4655, 5985, 8379, 13965, 41895, 19572769, 58718307, 97863845, 137009383, 176154921, 293591535, 371882611, 411028149, 685046915, 880774605, 959065681, 1115647833, 1233084447, 1859413055, 2055140745, 2603178277, 2877197043, 3346943499, 4795328405, 5578239165, 6165422235, 7809534831, 8631591129, 13015891385, 14385985215, 16734717495, 18222247939, 23428604493, 39047674155, 43157955645, 54666743817, 91111239695, 117143022465, 164000231451, 273333719085, 820001157255]

約数ペア:

[(1, 820001157255), (3, 273333719085), (5, 164000231451), (7, 117143022465), (9, 91111239695), (15, 54666743817), (19, 43157955645), (21, 39047674155), (35, 23428604493), (45, 18222247939), (49, 16734717495), (57, 14385985215), (63, 13015891385), (95, 8631591129), (105, 7809534831), (133, 6165422235), (147, 5578239165), (171, 4795328405), (245, 3346943499), (285, 2877197043), (315, 2603178277), (399, 2055140745), (441, 1859413055), (665, 1233084447), (735, 1115647833), (855, 959065681), (931, 880774605), (1197, 685046915), (1995, 411028149), (2205, 371882611), (2793, 293591535), (4655, 176154921), (5985, 137009383), (8379, 97863845), (13965, 58718307), (41895, 19572769)]