81866556

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{401}}^1$

素因数の和:571

約数の個数: 72

約数和(自身を含む): 213346224

約数和(自身を除く): 131479668

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 107, 159, 212, 214, 318, 321, 401, 428, 477, 636, 642, 802, 954, 963, 1203, 1284, 1604, 1908, 1926, 2406, 3609, 3852, 4812, 5671, 7218, 11342, 14436, 17013, 21253, 22684, 34026, 42506, 42907, 51039, 63759, 68052, 85012, 85814, 102078, 127518, 128721, 171628, 191277, 204156, 255036, 257442, 382554, 386163, 514884, 765108, 772326, 1544652, 2274071, 4548142, 6822213, 9096284, 13644426, 20466639, 27288852, 40933278, 81866556]

約数ペア:

[(1, 81866556), (2, 40933278), (3, 27288852), (4, 20466639), (6, 13644426), (9, 9096284), (12, 6822213), (18, 4548142), (36, 2274071), (53, 1544652), (106, 772326), (107, 765108), (159, 514884), (212, 386163), (214, 382554), (318, 257442), (321, 255036), (401, 204156), (428, 191277), (477, 171628), (636, 128721), (642, 127518), (802, 102078), (954, 85814), (963, 85012), (1203, 68052), (1284, 63759), (1604, 51039), (1908, 42907), (1926, 42506), (2406, 34026), (3609, 22684), (3852, 21253), (4812, 17013), (5671, 14436), (7218, 11342)]