20572160

素因数分解:

$2^{11}\times 5^1\times 7^2\times {\mathrm{41}}^1$

素因数の和:82

約数の個数: 144

約数和(自身を含む): 58820580

約数和(自身を除く): 38248420

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 49, 56, 64, 70, 80, 82, 98, 112, 128, 140, 160, 164, 196, 205, 224, 245, 256, 280, 287, 320, 328, 392, 410, 448, 490, 512, 560, 574, 640, 656, 784, 820, 896, 980, 1024, 1120, 1148, 1280, 1312, 1435, 1568, 1640, 1792, 1960, 2009, 2048, 2240, 2296, 2560, 2624, 2870, 3136, 3280, 3584, 3920, 4018, 4480, 4592, 5120, 5248, 5740, 6272, 6560, 7168, 7840, 8036, 8960, 9184, 10045, 10240, 10496, 11480, 12544, 13120, 14336, 15680, 16072, 17920, 18368, 20090, 20992, 22960, 25088, 26240, 31360, 32144, 35840, 36736, 40180, 41984, 45920, 50176, 52480, 62720, 64288, 71680, 73472, 80360, 83968, 91840, 100352, 104960, 125440, 128576, 146944, 160720, 183680, 209920, 250880, 257152, 293888, 321440, 367360, 419840, 501760, 514304, 587776, 642880, 734720, 1028608, 1285760, 1469440, 2057216, 2571520, 2938880, 4114432, 5143040, 10286080, 20572160]

約数ペア:

[(1, 20572160), (2, 10286080), (4, 5143040), (5, 4114432), (7, 2938880), (8, 2571520), (10, 2057216), (14, 1469440), (16, 1285760), (20, 1028608), (28, 734720), (32, 642880), (35, 587776), (40, 514304), (41, 501760), (49, 419840), (56, 367360), (64, 321440), (70, 293888), (80, 257152), (82, 250880), (98, 209920), (112, 183680), (128, 160720), (140, 146944), (160, 128576), (164, 125440), (196, 104960), (205, 100352), (224, 91840), (245, 83968), (256, 80360), (280, 73472), (287, 71680), (320, 64288), (328, 62720), (392, 52480), (410, 50176), (448, 45920), (490, 41984), (512, 40180), (560, 36736), (574, 35840), (640, 32144), (656, 31360), (784, 26240), (820, 25088), (896, 22960), (980, 20992), (1024, 20090), (1120, 18368), (1148, 17920), (1280, 16072), (1312, 15680), (1435, 14336), (1568, 13120), (1640, 12544), (1792, 11480), (1960, 10496), (2009, 10240), (2048, 10045), (2240, 9184), (2296, 8960), (2560, 8036), (2624, 7840), (2870, 7168), (3136, 6560), (3280, 6272), (3584, 5740), (3920, 5248), (4018, 5120), (4480, 4592)]