21757560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1$

素因数の和:389

約数の個数: 128

約数和(自身を含む): 72783360

約数和(自身を除く): 51025800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 53, 55, 60, 66, 88, 106, 110, 120, 132, 159, 165, 212, 220, 264, 265, 311, 318, 330, 424, 440, 530, 583, 622, 636, 660, 795, 933, 1060, 1166, 1244, 1272, 1320, 1555, 1590, 1749, 1866, 2120, 2332, 2488, 2915, 3110, 3180, 3421, 3498, 3732, 4664, 4665, 5830, 6220, 6360, 6842, 6996, 7464, 8745, 9330, 10263, 11660, 12440, 13684, 13992, 16483, 17105, 17490, 18660, 20526, 23320, 27368, 32966, 34210, 34980, 37320, 41052, 49449, 51315, 65932, 68420, 69960, 82104, 82415, 98898, 102630, 131864, 136840, 164830, 181313, 197796, 205260, 247245, 329660, 362626, 395592, 410520, 494490, 543939, 659320, 725252, 906565, 988980, 1087878, 1450504, 1813130, 1977960, 2175756, 2719695, 3626260, 4351512, 5439390, 7252520, 10878780, 21757560]

約数ペア:

[(1, 21757560), (2, 10878780), (3, 7252520), (4, 5439390), (5, 4351512), (6, 3626260), (8, 2719695), (10, 2175756), (11, 1977960), (12, 1813130), (15, 1450504), (20, 1087878), (22, 988980), (24, 906565), (30, 725252), (33, 659320), (40, 543939), (44, 494490), (53, 410520), (55, 395592), (60, 362626), (66, 329660), (88, 247245), (106, 205260), (110, 197796), (120, 181313), (132, 164830), (159, 136840), (165, 131864), (212, 102630), (220, 98898), (264, 82415), (265, 82104), (311, 69960), (318, 68420), (330, 65932), (424, 51315), (440, 49449), (530, 41052), (583, 37320), (622, 34980), (636, 34210), (660, 32966), (795, 27368), (933, 23320), (1060, 20526), (1166, 18660), (1244, 17490), (1272, 17105), (1320, 16483), (1555, 13992), (1590, 13684), (1749, 12440), (1866, 11660), (2120, 10263), (2332, 9330), (2488, 8745), (2915, 7464), (3110, 6996), (3180, 6842), (3421, 6360), (3498, 6220), (3732, 5830), (4664, 4665)]