20209280

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1$

素因数の和:386

約数の個数: 128

約数和(自身を含む): 59633280

約数和(自身を除く): 39424000

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 260, 280, 320, 347, 364, 416, 448, 455, 520, 560, 640, 694, 728, 832, 896, 910, 1040, 1120, 1388, 1456, 1664, 1735, 1820, 2080, 2240, 2429, 2776, 2912, 3470, 3640, 4160, 4480, 4511, 4858, 5552, 5824, 6940, 7280, 8320, 9022, 9716, 11104, 11648, 12145, 13880, 14560, 18044, 19432, 22208, 22555, 24290, 27760, 29120, 31577, 36088, 38864, 44416, 45110, 48580, 55520, 58240, 63154, 72176, 77728, 90220, 97160, 111040, 126308, 144352, 155456, 157885, 180440, 194320, 222080, 252616, 288704, 310912, 315770, 360880, 388640, 505232, 577408, 631540, 721760, 777280, 1010464, 1263080, 1443520, 1554560, 2020928, 2526160, 2887040, 4041856, 5052320, 10104640, 20209280]

約数ペア:

[(1, 20209280), (2, 10104640), (4, 5052320), (5, 4041856), (7, 2887040), (8, 2526160), (10, 2020928), (13, 1554560), (14, 1443520), (16, 1263080), (20, 1010464), (26, 777280), (28, 721760), (32, 631540), (35, 577408), (40, 505232), (52, 388640), (56, 360880), (64, 315770), (65, 310912), (70, 288704), (80, 252616), (91, 222080), (104, 194320), (112, 180440), (128, 157885), (130, 155456), (140, 144352), (160, 126308), (182, 111040), (208, 97160), (224, 90220), (260, 77728), (280, 72176), (320, 63154), (347, 58240), (364, 55520), (416, 48580), (448, 45110), (455, 44416), (520, 38864), (560, 36088), (640, 31577), (694, 29120), (728, 27760), (832, 24290), (896, 22555), (910, 22208), (1040, 19432), (1120, 18044), (1388, 14560), (1456, 13880), (1664, 12145), (1735, 11648), (1820, 11104), (2080, 9716), (2240, 9022), (2429, 8320), (2776, 7280), (2912, 6940), (3470, 5824), (3640, 5552), (4160, 4858), (4480, 4511)]