21476840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{367}}^1$

素因数の和:415

約数の個数: 128

約数和(自身を含む): 63590400

約数和(自身を除く): 42113560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 19, 20, 22, 28, 35, 38, 40, 44, 55, 56, 70, 76, 77, 88, 95, 110, 133, 140, 152, 154, 190, 209, 220, 266, 280, 308, 367, 380, 385, 418, 440, 532, 616, 665, 734, 760, 770, 836, 1045, 1064, 1330, 1463, 1468, 1540, 1672, 1835, 2090, 2569, 2660, 2926, 2936, 3080, 3670, 4037, 4180, 5138, 5320, 5852, 6973, 7315, 7340, 8074, 8360, 10276, 11704, 12845, 13946, 14630, 14680, 16148, 20185, 20552, 25690, 27892, 28259, 29260, 32296, 34865, 40370, 48811, 51380, 55784, 56518, 58520, 69730, 76703, 80740, 97622, 102760, 113036, 139460, 141295, 153406, 161480, 195244, 226072, 244055, 278920, 282590, 306812, 383515, 390488, 488110, 536921, 565180, 613624, 767030, 976220, 1073842, 1130360, 1534060, 1952440, 2147684, 2684605, 3068120, 4295368, 5369210, 10738420, 21476840]

約数ペア:

[(1, 21476840), (2, 10738420), (4, 5369210), (5, 4295368), (7, 3068120), (8, 2684605), (10, 2147684), (11, 1952440), (14, 1534060), (19, 1130360), (20, 1073842), (22, 976220), (28, 767030), (35, 613624), (38, 565180), (40, 536921), (44, 488110), (55, 390488), (56, 383515), (70, 306812), (76, 282590), (77, 278920), (88, 244055), (95, 226072), (110, 195244), (133, 161480), (140, 153406), (152, 141295), (154, 139460), (190, 113036), (209, 102760), (220, 97622), (266, 80740), (280, 76703), (308, 69730), (367, 58520), (380, 56518), (385, 55784), (418, 51380), (440, 48811), (532, 40370), (616, 34865), (665, 32296), (734, 29260), (760, 28259), (770, 27892), (836, 25690), (1045, 20552), (1064, 20185), (1330, 16148), (1463, 14680), (1468, 14630), (1540, 13946), (1672, 12845), (1835, 11704), (2090, 10276), (2569, 8360), (2660, 8074), (2926, 7340), (2936, 7315), (3080, 6973), (3670, 5852), (4037, 5320), (4180, 5138)]