20601280

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{541}}^1$

素因数の和:582

約数の個数: 112

約数和(自身を含む): 59472576

約数和(自身を除く): 38871296

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 64, 68, 70, 80, 85, 112, 119, 136, 140, 160, 170, 224, 238, 272, 280, 320, 340, 448, 476, 541, 544, 560, 595, 680, 952, 1082, 1088, 1120, 1190, 1360, 1904, 2164, 2240, 2380, 2705, 2720, 3787, 3808, 4328, 4760, 5410, 5440, 7574, 7616, 8656, 9197, 9520, 10820, 15148, 17312, 18394, 18935, 19040, 21640, 30296, 34624, 36788, 37870, 38080, 43280, 45985, 60592, 64379, 73576, 75740, 86560, 91970, 121184, 128758, 147152, 151480, 173120, 183940, 242368, 257516, 294304, 302960, 321895, 367880, 515032, 588608, 605920, 643790, 735760, 1030064, 1211840, 1287580, 1471520, 2060128, 2575160, 2943040, 4120256, 5150320, 10300640, 20601280]

約数ペア:

[(1, 20601280), (2, 10300640), (4, 5150320), (5, 4120256), (7, 2943040), (8, 2575160), (10, 2060128), (14, 1471520), (16, 1287580), (17, 1211840), (20, 1030064), (28, 735760), (32, 643790), (34, 605920), (35, 588608), (40, 515032), (56, 367880), (64, 321895), (68, 302960), (70, 294304), (80, 257516), (85, 242368), (112, 183940), (119, 173120), (136, 151480), (140, 147152), (160, 128758), (170, 121184), (224, 91970), (238, 86560), (272, 75740), (280, 73576), (320, 64379), (340, 60592), (448, 45985), (476, 43280), (541, 38080), (544, 37870), (560, 36788), (595, 34624), (680, 30296), (952, 21640), (1082, 19040), (1088, 18935), (1120, 18394), (1190, 17312), (1360, 15148), (1904, 10820), (2164, 9520), (2240, 9197), (2380, 8656), (2705, 7616), (2720, 7574), (3787, 5440), (3808, 5410), (4328, 4760)]