8378920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 20865600

約数和(自身を除く): 12486680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 137, 139, 220, 274, 278, 440, 548, 556, 685, 695, 1096, 1112, 1370, 1390, 1507, 1529, 2740, 2780, 3014, 3058, 5480, 5560, 6028, 6116, 7535, 7645, 12056, 12232, 15070, 15290, 19043, 30140, 30580, 38086, 60280, 61160, 76172, 95215, 152344, 190430, 209473, 380860, 418946, 761720, 837892, 1047365, 1675784, 2094730, 4189460, 8378920]

約数ペア:

[(1, 8378920), (2, 4189460), (4, 2094730), (5, 1675784), (8, 1047365), (10, 837892), (11, 761720), (20, 418946), (22, 380860), (40, 209473), (44, 190430), (55, 152344), (88, 95215), (110, 76172), (137, 61160), (139, 60280), (220, 38086), (274, 30580), (278, 30140), (440, 19043), (548, 15290), (556, 15070), (685, 12232), (695, 12056), (1096, 7645), (1112, 7535), (1370, 6116), (1390, 6028), (1507, 5560), (1529, 5480), (2740, 3058), (2780, 3014)]