21131018520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{971}}^1\times {\mathrm{1201}}^1$

素因数の和:2337

約数の個数: 128

約数和(自身を含む): 63931783680

約数和(自身を除く): 42800765160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 151, 302, 453, 604, 755, 906, 971, 1201, 1208, 1510, 1812, 1942, 2265, 2402, 2913, 3020, 3603, 3624, 3884, 4530, 4804, 4855, 5826, 6005, 6040, 7206, 7768, 9060, 9608, 9710, 11652, 12010, 14412, 14565, 18015, 18120, 19420, 23304, 24020, 28824, 29130, 36030, 38840, 48040, 58260, 72060, 116520, 144120, 146621, 181351, 293242, 362702, 439863, 544053, 586484, 725404, 733105, 879726, 906755, 1088106, 1166171, 1172968, 1450808, 1466210, 1759452, 1813510, 2176212, 2199315, 2332342, 2720265, 2932420, 3498513, 3518904, 3627020, 4352424, 4398630, 4664684, 5440530, 5830855, 5864840, 6997026, 7254040, 8797260, 9329368, 10881060, 11661710, 13994052, 17492565, 17594520, 21762120, 23323420, 27988104, 34985130, 46646840, 69970260, 139940520, 176091821, 352183642, 528275463, 704367284, 880459105, 1056550926, 1408734568, 1760918210, 2113101852, 2641377315, 3521836420, 4226203704, 5282754630, 7043672840, 10565509260, 21131018520]

約数ペア:

[(1, 21131018520), (2, 10565509260), (3, 7043672840), (4, 5282754630), (5, 4226203704), (6, 3521836420), (8, 2641377315), (10, 2113101852), (12, 1760918210), (15, 1408734568), (20, 1056550926), (24, 880459105), (30, 704367284), (40, 528275463), (60, 352183642), (120, 176091821), (151, 139940520), (302, 69970260), (453, 46646840), (604, 34985130), (755, 27988104), (906, 23323420), (971, 21762120), (1201, 17594520), (1208, 17492565), (1510, 13994052), (1812, 11661710), (1942, 10881060), (2265, 9329368), (2402, 8797260), (2913, 7254040), (3020, 6997026), (3603, 5864840), (3624, 5830855), (3884, 5440530), (4530, 4664684), (4804, 4398630), (4855, 4352424), (5826, 3627020), (6005, 3518904), (6040, 3498513), (7206, 2932420), (7768, 2720265), (9060, 2332342), (9608, 2199315), (9710, 2176212), (11652, 1813510), (12010, 1759452), (14412, 1466210), (14565, 1450808), (18015, 1172968), (18120, 1166171), (19420, 1088106), (23304, 906755), (24020, 879726), (28824, 733105), (29130, 725404), (36030, 586484), (38840, 544053), (48040, 439863), (58260, 362702), (72060, 293242), (116520, 181351), (144120, 146621)]