28240560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:723

約数の個数: 120

約数和(自身を含む): 96545904

約数和(自身を除く): 68305344

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 61, 72, 80, 90, 120, 122, 144, 180, 183, 240, 244, 305, 360, 366, 488, 549, 610, 643, 720, 732, 915, 976, 1098, 1220, 1286, 1464, 1830, 1929, 2196, 2440, 2572, 2745, 2928, 3215, 3660, 3858, 4392, 4880, 5144, 5490, 5787, 6430, 7320, 7716, 8784, 9645, 10288, 10980, 11574, 12860, 14640, 15432, 19290, 21960, 23148, 25720, 28935, 30864, 38580, 39223, 43920, 46296, 51440, 57870, 77160, 78446, 92592, 115740, 117669, 154320, 156892, 196115, 231480, 235338, 313784, 353007, 392230, 462960, 470676, 588345, 627568, 706014, 784460, 941352, 1176690, 1412028, 1568920, 1765035, 1882704, 2353380, 2824056, 3137840, 3530070, 4706760, 5648112, 7060140, 9413520, 14120280, 28240560]

約数ペア:

[(1, 28240560), (2, 14120280), (3, 9413520), (4, 7060140), (5, 5648112), (6, 4706760), (8, 3530070), (9, 3137840), (10, 2824056), (12, 2353380), (15, 1882704), (16, 1765035), (18, 1568920), (20, 1412028), (24, 1176690), (30, 941352), (36, 784460), (40, 706014), (45, 627568), (48, 588345), (60, 470676), (61, 462960), (72, 392230), (80, 353007), (90, 313784), (120, 235338), (122, 231480), (144, 196115), (180, 156892), (183, 154320), (240, 117669), (244, 115740), (305, 92592), (360, 78446), (366, 77160), (488, 57870), (549, 51440), (610, 46296), (643, 43920), (720, 39223), (732, 38580), (915, 30864), (976, 28935), (1098, 25720), (1220, 23148), (1286, 21960), (1464, 19290), (1830, 15432), (1929, 14640), (2196, 12860), (2440, 11574), (2572, 10980), (2745, 10288), (2928, 9645), (3215, 8784), (3660, 7716), (3858, 7320), (4392, 6430), (4880, 5787), (5144, 5490)]