51218840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{31231}}^1$

素因数の和:31283

約数の個数: 32

約数和(自身を含む): 118056960

約数和(自身を除く): 66838120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 31231, 62462, 124924, 156155, 249848, 312310, 624620, 1249240, 1280471, 2560942, 5121884, 6402355, 10243768, 12804710, 25609420, 51218840]

約数ペア:

[(1, 51218840), (2, 25609420), (4, 12804710), (5, 10243768), (8, 6402355), (10, 5121884), (20, 2560942), (40, 1280471), (41, 1249240), (82, 624620), (164, 312310), (205, 249848), (328, 156155), (410, 124924), (820, 62462), (1640, 31231)]