20164480

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{643}}^1$

素因数の和:676

約数の個数: 96

約数和(自身を含む): 56163240

約数和(自身を除く): 35998760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 640, 643, 784, 896, 980, 1120, 1286, 1568, 1960, 2240, 2572, 3136, 3215, 3920, 4480, 4501, 5144, 6272, 6430, 7840, 9002, 10288, 12860, 15680, 18004, 20576, 22505, 25720, 31360, 31507, 36008, 41152, 45010, 51440, 63014, 72016, 82304, 90020, 102880, 126028, 144032, 157535, 180040, 205760, 252056, 288064, 315070, 360080, 411520, 504112, 576128, 630140, 720160, 1008224, 1260280, 1440320, 2016448, 2520560, 2880640, 4032896, 5041120, 10082240, 20164480]

約数ペア:

[(1, 20164480), (2, 10082240), (4, 5041120), (5, 4032896), (7, 2880640), (8, 2520560), (10, 2016448), (14, 1440320), (16, 1260280), (20, 1008224), (28, 720160), (32, 630140), (35, 576128), (40, 504112), (49, 411520), (56, 360080), (64, 315070), (70, 288064), (80, 252056), (98, 205760), (112, 180040), (128, 157535), (140, 144032), (160, 126028), (196, 102880), (224, 90020), (245, 82304), (280, 72016), (320, 63014), (392, 51440), (448, 45010), (490, 41152), (560, 36008), (640, 31507), (643, 31360), (784, 25720), (896, 22505), (980, 20576), (1120, 18004), (1286, 15680), (1568, 12860), (1960, 10288), (2240, 9002), (2572, 7840), (3136, 6430), (3215, 6272), (3920, 5144), (4480, 4501)]