21208770

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:257

約数の個数: 128

約数和(自身を含む): 63694080

約数和(自身を除く): 42485310

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 33, 37, 45, 54, 55, 66, 74, 90, 99, 110, 111, 135, 165, 185, 193, 198, 222, 270, 297, 330, 333, 370, 386, 407, 495, 555, 579, 594, 666, 814, 965, 990, 999, 1110, 1158, 1221, 1485, 1665, 1737, 1930, 1998, 2035, 2123, 2442, 2895, 2970, 3330, 3474, 3663, 4070, 4246, 4995, 5211, 5790, 6105, 6369, 7141, 7326, 8685, 9990, 10422, 10615, 10989, 12210, 12738, 14282, 17370, 18315, 19107, 21230, 21423, 21978, 26055, 31845, 35705, 36630, 38214, 42846, 52110, 54945, 57321, 63690, 64269, 71410, 78551, 95535, 107115, 109890, 114642, 128538, 157102, 191070, 192807, 214230, 235653, 286605, 321345, 385614, 392755, 471306, 573210, 642690, 706959, 785510, 964035, 1178265, 1413918, 1928070, 2120877, 2356530, 3534795, 4241754, 7069590, 10604385, 21208770]

約数ペア:

[(1, 21208770), (2, 10604385), (3, 7069590), (5, 4241754), (6, 3534795), (9, 2356530), (10, 2120877), (11, 1928070), (15, 1413918), (18, 1178265), (22, 964035), (27, 785510), (30, 706959), (33, 642690), (37, 573210), (45, 471306), (54, 392755), (55, 385614), (66, 321345), (74, 286605), (90, 235653), (99, 214230), (110, 192807), (111, 191070), (135, 157102), (165, 128538), (185, 114642), (193, 109890), (198, 107115), (222, 95535), (270, 78551), (297, 71410), (330, 64269), (333, 63690), (370, 57321), (386, 54945), (407, 52110), (495, 42846), (555, 38214), (579, 36630), (594, 35705), (666, 31845), (814, 26055), (965, 21978), (990, 21423), (999, 21230), (1110, 19107), (1158, 18315), (1221, 17370), (1485, 14282), (1665, 12738), (1737, 12210), (1930, 10989), (1998, 10615), (2035, 10422), (2123, 9990), (2442, 8685), (2895, 7326), (2970, 7141), (3330, 6369), (3474, 6105), (3663, 5790), (4070, 5211), (4246, 4995)]