20180757040

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{22469}}^1$

素因数の和:22694

約数の個数: 80

約数和(自身を含む): 47812564800

約数和(自身を除く): 27631807760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 109, 206, 218, 412, 436, 515, 545, 824, 872, 1030, 1090, 1648, 1744, 2060, 2180, 4120, 4360, 8240, 8720, 11227, 22454, 22469, 44908, 44938, 56135, 89816, 89876, 112270, 112345, 179632, 179752, 224540, 224690, 359504, 449080, 449380, 898160, 898760, 1797520, 2314307, 2449121, 4628614, 4898242, 9257228, 9796484, 11571535, 12245605, 18514456, 19592968, 23143070, 24491210, 37028912, 39185936, 46286140, 48982420, 92572280, 97964840, 185144560, 195929680, 252259463, 504518926, 1009037852, 1261297315, 2018075704, 2522594630, 4036151408, 5045189260, 10090378520, 20180757040]

約数ペア:

[(1, 20180757040), (2, 10090378520), (4, 5045189260), (5, 4036151408), (8, 2522594630), (10, 2018075704), (16, 1261297315), (20, 1009037852), (40, 504518926), (80, 252259463), (103, 195929680), (109, 185144560), (206, 97964840), (218, 92572280), (412, 48982420), (436, 46286140), (515, 39185936), (545, 37028912), (824, 24491210), (872, 23143070), (1030, 19592968), (1090, 18514456), (1648, 12245605), (1744, 11571535), (2060, 9796484), (2180, 9257228), (4120, 4898242), (4360, 4628614), (8240, 2449121), (8720, 2314307), (11227, 1797520), (22454, 898760), (22469, 898160), (44908, 449380), (44938, 449080), (56135, 359504), (89816, 224690), (89876, 224540), (112270, 179752), (112345, 179632)]