20541280

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1$

素因数の和:296

約数の個数: 96

約数和(自身を含む): 53071200

約数和(自身を除く): 32529920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 32, 38, 40, 58, 76, 80, 95, 116, 145, 152, 160, 190, 232, 233, 290, 304, 380, 464, 466, 551, 580, 608, 760, 928, 932, 1102, 1160, 1165, 1520, 1864, 2204, 2320, 2330, 2755, 3040, 3728, 4408, 4427, 4640, 4660, 5510, 6757, 7456, 8816, 8854, 9320, 11020, 13514, 17632, 17708, 18640, 22040, 22135, 27028, 33785, 35416, 37280, 44080, 44270, 54056, 67570, 70832, 88160, 88540, 108112, 128383, 135140, 141664, 177080, 216224, 256766, 270280, 354160, 513532, 540560, 641915, 708320, 1027064, 1081120, 1283830, 2054128, 2567660, 4108256, 5135320, 10270640, 20541280]

約数ペア:

[(1, 20541280), (2, 10270640), (4, 5135320), (5, 4108256), (8, 2567660), (10, 2054128), (16, 1283830), (19, 1081120), (20, 1027064), (29, 708320), (32, 641915), (38, 540560), (40, 513532), (58, 354160), (76, 270280), (80, 256766), (95, 216224), (116, 177080), (145, 141664), (152, 135140), (160, 128383), (190, 108112), (232, 88540), (233, 88160), (290, 70832), (304, 67570), (380, 54056), (464, 44270), (466, 44080), (551, 37280), (580, 35416), (608, 33785), (760, 27028), (928, 22135), (932, 22040), (1102, 18640), (1160, 17708), (1165, 17632), (1520, 13514), (1864, 11020), (2204, 9320), (2320, 8854), (2330, 8816), (2755, 7456), (3040, 6757), (3728, 5510), (4408, 4660), (4427, 4640)]