21108560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{83}}^1$

素因数の和:141

約数の個数: 120

約数和(自身を含む): 57558816

約数和(自身を除く): 36450256

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 83, 85, 88, 110, 136, 166, 170, 176, 187, 220, 272, 289, 332, 340, 374, 415, 440, 578, 664, 680, 748, 830, 880, 913, 935, 1156, 1328, 1360, 1411, 1445, 1496, 1660, 1826, 1870, 2312, 2822, 2890, 2992, 3179, 3320, 3652, 3740, 4565, 4624, 5644, 5780, 6358, 6640, 7055, 7304, 7480, 9130, 11288, 11560, 12716, 14110, 14608, 14960, 15521, 15895, 18260, 22576, 23120, 23987, 25432, 28220, 31042, 31790, 36520, 47974, 50864, 56440, 62084, 63580, 73040, 77605, 95948, 112880, 119935, 124168, 127160, 155210, 191896, 239870, 248336, 254320, 263857, 310420, 383792, 479740, 527714, 620840, 959480, 1055428, 1241680, 1319285, 1918960, 2110856, 2638570, 4221712, 5277140, 10554280, 21108560]

約数ペア:

[(1, 21108560), (2, 10554280), (4, 5277140), (5, 4221712), (8, 2638570), (10, 2110856), (11, 1918960), (16, 1319285), (17, 1241680), (20, 1055428), (22, 959480), (34, 620840), (40, 527714), (44, 479740), (55, 383792), (68, 310420), (80, 263857), (83, 254320), (85, 248336), (88, 239870), (110, 191896), (136, 155210), (166, 127160), (170, 124168), (176, 119935), (187, 112880), (220, 95948), (272, 77605), (289, 73040), (332, 63580), (340, 62084), (374, 56440), (415, 50864), (440, 47974), (578, 36520), (664, 31790), (680, 31042), (748, 28220), (830, 25432), (880, 23987), (913, 23120), (935, 22576), (1156, 18260), (1328, 15895), (1360, 15521), (1411, 14960), (1445, 14608), (1496, 14110), (1660, 12716), (1826, 11560), (1870, 11288), (2312, 9130), (2822, 7480), (2890, 7304), (2992, 7055), (3179, 6640), (3320, 6358), (3652, 5780), (3740, 5644), (4565, 4624)]